165610516000010 has 16 divisors (see below), whose sum is σ = 298101553640136. Its totient is φ = 66243623102208.

The previous prime is 165610515999961. The next prime is 165610516000051. The reversal of 165610516000010 is 10000615016561.

It can be written as a sum of positive squares in 4 ways, for example, as 165520138204369 + 90377795641 = 12865463^2 + 300629^2 .

It is a Curzon number.

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, 71718827 + ... + 73991966.

Almost surely, 2^{165610516000010} is an apocalyptic number.

165610516000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165610516000010 is a deficient number, since it is larger than the sum of its proper divisors (132491037640126).

165610516000010 is a wasteful number, since it uses less digits than its factorization.

165610516000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145824457.

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

The spelling of 165610516000010 in words is "one hundred sixty-five trillion, six hundred ten billion, five hundred sixteen million, ten", and thus it is an aban number.