165151505560056 has 32 divisors (see below), whose sum is σ = 412954647109200. Its totient is φ = 55040384092160.

The previous prime is 165151505560051. The next prime is 165151505560081. The reversal of 165151505560056 is 650065505151561.

It is a junction number, because it is equal to n+sod(n) for n = 165151505559990 and 165151505560008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165151505560051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632226771 + ... + 632487938.

Almost surely, 2^{165151505560056} is an apocalyptic number.

It is an amenable number.

165151505560056 is an abundant number, since it is smaller than the sum of its proper divisors (247803141549144).

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

165151505560056 is a wasteful number, since it uses less digits than its factorization.

165151505560056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264720159 (or 1264720155 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 165151505560056 in words is "one hundred sixty-five trillion, one hundred fifty-one billion, five hundred five million, five hundred sixty thousand, fifty-six".