165055015656 has 128 divisors (see below), whose sum is σ = 502196112000. Its totient is φ = 49996348416.

The previous prime is 165055015651. The next prime is 165055015799. The reversal of 165055015656 is 656510550561.

165055015656 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 2×165055015656² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165055015651) 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 31 ways as a sum of consecutive naturals, for example, 668506 + ... + 881481.

It is an arithmetic number, because the mean of its divisors is an integer number (3923407125).

Almost surely, 2^165055015656 is an apocalyptic number.

It is an amenable number.

165055015656 is an abundant number, since it is smaller than the sum of its proper divisors (337141096344).

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

165055015656 is a wasteful number, since it uses less digits than its factorization.

165055015656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550048 (or 1550038 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 165055015656 in words is "one hundred sixty-five billion, fifty-five million, fifteen thousand, six hundred fifty-six".