| Base | Representation |
|---|---|
| bin | 1001000110000111111110… |
| … | …10000100010011000101000 |
| 3 | 2121211010202101201011111010 |
| 4 | 10203003333100202120220 |
| 5 | 10110201334431133100 |
| 6 | 110312344204503520 |
| 7 | 4133033352662052 |
| oct | 443037720423050 |
| 9 | 77733671634433 |
| 10 | 20001650255400 |
| 11 | 641171a144380 |
| 12 | 22b055424aba0 |
| 13 | b211bc164218 |
| 14 | 4d21294b48d2 |
| 15 | 24a44ebb0750 |
| hex | 1230ff422628 |
20001650255400 has 384 divisors, whose sum is σ = 68070588917760. Its totient is φ = 4818246144000.
The previous prime is 20001650255399. The next prime is 20001650255401. The reversal of 20001650255400 is 455205610002.
It is an interprime number because it is at equal distance from previous prime (20001650255399) and next prime (20001650255401).
It is a Harshad number since it is a multiple of its sum of digits (30).
It is not an unprimeable number, because it can be changed into a prime (20001650255401) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 742796737 + ... + 742823663.
It is an arithmetic number, because the mean of its divisors is an integer number (177267158640).
Almost surely, 220001650255400 is an apocalyptic number.
20001650255400 is a gapful number since it is divisible by the number (20) 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 20001650255400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34035294458880).
20001650255400 is an abundant number, since it is smaller than the sum of its proper divisors (48068938662360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20001650255400 is a wasteful number, since it uses less digits than its factorization.
20001650255400 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 27665 (or 27656 counting only the distinct ones).
The product of its (nonzero) digits is 12000, while the sum is 30.
Adding to 20001650255400 its reverse (455205610002), we get a palindrome (20456855865402).
The spelling of 20001650255400 in words is "twenty trillion, one billion, six hundred fifty million, two hundred fifty-five thousand, four hundred".
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