| Base | Representation |
|---|---|
| bin | 1001011010001011101… |
| … | …1001011110101001000 |
| 3 | 120110020110202021200000 |
| 4 | 2112202323023311020 |
| 5 | 10122023141321041 |
| 6 | 202132032443000 |
| 7 | 14451524435040 |
| oct | 2264273136510 |
| 9 | 513213667600 |
| 10 | 161647213896 |
| 11 | 62610702363 |
| 12 | 273b33a9460 |
| 13 | 123215c38bc |
| 14 | 7b765b8720 |
| 15 | 43113b5bb6 |
| hex | 25a2ecbd48 |
161647213896 has 192 divisors, whose sum is σ = 528659913600. Its totient is φ = 45313302528.
The previous prime is 161647213891. The next prime is 161647213913. The reversal of 161647213896 is 698312746161.
161647213896 is a `hidden beast` number, since 1 + 616 + 4 + 7 + 2 + 13 + 8 + 9 + 6 = 666.
161647213896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×1616472138962 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a nude number because it is divisible by every one of its digits.
It is not an unprimeable number, because it can be changed into a prime (161647213891) 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 47 ways as a sum of consecutive naturals, for example, 609160 + ... + 833288.
It is an arithmetic number, because the mean of its divisors is an integer number (2753437050).
Almost surely, 2161647213896 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 161647213896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264329956800).
161647213896 is an abundant number, since it is smaller than the sum of its proper divisors (367012699704).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
161647213896 is a wasteful number, since it uses less digits than its factorization.
161647213896 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 224210 (or 224194 counting only the distinct ones).
The product of its digits is 2612736, while the sum is 54.
The spelling of 161647213896 in words is "one hundred sixty-one billion, six hundred forty-seven million, two hundred thirteen thousand, eight hundred ninety-six".
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