64623104665 has 16 divisors (see below), whose sum is σ = 93290497920. Its totient is φ = 41980723200.

The previous prime is 64623104659. The next prime is 64623104687. The reversal of 64623104665 is 56640132646.

It is not a de Polignac number, because 64623104665 - 2¹⁵ = 64623071897 is a prime.

It is a super-2 number, since 2×64623104665² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48588136 + ... + 48589465.

It is an arithmetic number, because the mean of its divisors is an integer number (5830656120).

Almost surely, 2^64623104665 is an apocalyptic number.

It is an amenable number.

64623104665 is a deficient number, since it is larger than the sum of its proper divisors (28667393255).

64623104665 is a wasteful number, since it uses less digits than its factorization.

64623104665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97177632.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 64623104665 in words is "sixty-four billion, six hundred twenty-three million, one hundred four thousand, six hundred sixty-five".