165116623140256 has 12 divisors (see below), whose sum is σ = 325073351807442. Its totient is φ = 82558311570112.

The previous prime is 165116623140253. The next prime is 165116623140257. The reversal of 165116623140256 is 652041326611561.

It can be written as a sum of positive squares in only one way, i.e., 151971792803856 + 13144830336400 = 12327684^2 + 3625580^2 .

It is not an unprimeable number, because it can be changed into a prime (165116623140253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2579947236535 + ... + 2579947236598.

Almost surely, 2^{165116623140256} is an apocalyptic number.

165116623140256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165116623140256 is a deficient number, since it is larger than the sum of its proper divisors (159956728667186).

165116623140256 is an equidigital number, since it uses as much as digits as its factorization.

165116623140256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159894473143 (or 5159894473135 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 165116623140256 in words is "one hundred sixty-five trillion, one hundred sixteen billion, six hundred twenty-three million, one hundred forty thousand, two hundred fifty-six".