165056240556 has 18 divisors (see below), whose sum is σ = 417225497052. Its totient is φ = 55018746840.

The previous prime is 165056240521. The next prime is 165056240603. The reversal of 165056240556 is 655042650561.

165056240556 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 56 + 2 + 40 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2292447750 + ... + 2292447821.

Almost surely, 2^165056240556 is an apocalyptic number.

It is an amenable number.

165056240556 is an abundant number, since it is smaller than the sum of its proper divisors (252169256496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165056240556 is a wasteful number, since it uses less digits than its factorization.

165056240556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584895581 (or 4584895576 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 165056240556 in words is "one hundred sixty-five billion, fifty-six million, two hundred forty thousand, five hundred fifty-six".