165280284256 has 48 divisors (see below), whose sum is σ = 325965475584. Its totient is φ = 82495569024.

The previous prime is 165280284223. The next prime is 165280284287. The reversal of 165280284256 is 652482082561.

It is a super-2 number, since 2×165280284256² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79346191 + ... + 79348273.

It is an arithmetic number, because the mean of its divisors is an integer number (6790947408).

Almost surely, 2^165280284256 is an apocalyptic number.

165280284256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165280284256 is a deficient number, since it is larger than the sum of its proper divisors (160685191328).

165280284256 is a wasteful number, since it uses less digits than its factorization.

165280284256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243 (or 5235 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 165280284256 in words is "one hundred sixty-five billion, two hundred eighty million, two hundred eighty-four thousand, two hundred fifty-six".