165551110156 has 48 divisors (see below), whose sum is σ = 310826043360. Its totient is φ = 76912243200.

The previous prime is 165551110111. The next prime is 165551110157. The reversal of 165551110156 is 651011155561.

It is not an unprimeable number, because it can be changed into a prime (165551110157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15611256 + ... + 15621856.

It is an arithmetic number, because the mean of its divisors is an integer number (6475542570).

Almost surely, 2^165551110156 is an apocalyptic number.

It is an amenable number.

165551110156 is a deficient number, since it is larger than the sum of its proper divisors (145274933204).

165551110156 is a wasteful number, since it uses less digits than its factorization.

165551110156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14554 (or 14552 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 37.

The spelling of 165551110156 in words is "one hundred sixty-five billion, five hundred fifty-one million, one hundred ten thousand, one hundred fifty-six".