88023721665 has 32 divisors (see below), whose sum is σ = 154499788800. Its totient is φ = 42439728320.

The previous prime is 88023721657. The next prime is 88023721679. The reversal of 88023721665 is 56612732088.

It is not a de Polignac number, because 88023721665 - 2³ = 88023721657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1460625 + ... + 1519694.

It is an arithmetic number, because the mean of its divisors is an integer number (4828118400).

Almost surely, 2^88023721665 is an apocalyptic number.

It is an amenable number.

88023721665 is a deficient number, since it is larger than the sum of its proper divisors (66476067135).

88023721665 is a wasteful number, since it uses less digits than its factorization.

88023721665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980517.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 88023721665 in words is "eighty-eight billion, twenty-three million, seven hundred twenty-one thousand, six hundred sixty-five".