165601015610 has 16 divisors (see below), whose sum is σ = 298092082176. Its totient is φ = 66238127568.

The previous prime is 165601015603. The next prime is 165601015627. The reversal of 165601015610 is 16510106561.

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, 37799 + ... + 576741.

It is an arithmetic number, because the mean of its divisors is an integer number (18630755136).

Almost surely, 2^165601015610 is an apocalyptic number.

165601015610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165601015610 is a deficient number, since it is larger than the sum of its proper divisors (132491066566).

165601015610 is a wasteful number, since it uses less digits than its factorization.

165601015610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569677.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 165601015610 in words is "one hundred sixty-five billion, six hundred one million, fifteen thousand, six hundred ten".