| Base | Representation |
|---|---|
| bin | 1110001101000010011111001… |
| … | …0010111101111100111000000 |
| 3 | 11212001221011002020100222101000 |
| 4 | 3203100213302113233213000 |
| 5 | 2022001242010402232030 |
| 6 | 13501431223340012000 |
| 7 | 420346255534154100 |
| oct | 34320476227574700 |
| 9 | 4761834066328330 |
| 10 | 999498790664640 |
| 11 | 26a5200694a5632 |
| 12 | 9412568a831000 |
| 13 | 33b924404c7256 |
| 14 | 138b5ddcc13200 |
| 15 | 7a843cd436860 |
| hex | 38d09f25ef9c0 |
999498790664640 has 5376 divisors, whose sum is σ = 4432085973504000. Its totient is φ = 211065592872960.
The previous prime is 999498790664639. The next prime is 999498790664641. The reversal of 999498790664640 is 46466097894999.
999498790664640 is a `hidden beast` number, since 9 + 9 + 9 + 4 + 9 + 87 + 9 + 0 + 66 + 464 + 0 = 666.
It is an interprime number because it is at equal distance from previous prime (999498790664639) and next prime (999498790664641).
It is a Harshad number since it is a multiple of its sum of digits (90).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (999498790664641) by changing a digit.
It is a polite number, since it can be written in 767 ways as a sum of consecutive naturals, for example, 7190638781691 + ... + 7190638781829.
It is an arithmetic number, because the mean of its divisors is an integer number (824420754000).
Almost surely, 2999498790664640 is an apocalyptic number.
999498790664640 is a gapful number since it is divisible by the number (90) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 999498790664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2216042986752000).
999498790664640 is an abundant number, since it is smaller than the sum of its proper divisors (3432587182839360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
999498790664640 is a wasteful number, since it uses less digits than its factorization.
999498790664640 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 465 (or 442 counting only the distinct ones).
The product of its (nonzero) digits is 45712429056, while the sum is 90.
The spelling of 999498790664640 in words is "nine hundred ninety-nine trillion, four hundred ninety-eight billion, seven hundred ninety million, six hundred sixty-four thousand, six hundred forty".
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