165610015012 has 12 divisors (see below), whose sum is σ = 312111182236. Its totient is φ = 76435391520.

The previous prime is 165610014967. The next prime is 165610015031. The reversal of 165610015012 is 210510016561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43888574016 + 121721440996 = 209496^2 + 348886^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1592403939 + ... + 1592404042.

Almost surely, 2^165610015012 is an apocalyptic number.

It is an amenable number.

165610015012 is a deficient number, since it is larger than the sum of its proper divisors (146501167224).

165610015012 is a wasteful number, since it uses less digits than its factorization.

165610015012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3184807998 (or 3184807996 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 165610015012 in words is "one hundred sixty-five billion, six hundred ten million, fifteen thousand, twelve".