64732623745 has 16 divisors (see below), whose sum is σ = 78831688320. Its totient is φ = 51018822400.

The previous prime is 64732623719. The next prime is 64732623751. The reversal of 64732623745 is 54732623746.

64732623745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64732623745 - 2²⁵ = 64699069313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416166 + ... + 550144.

It is an arithmetic number, because the mean of its divisors is an integer number (4926980520).

Almost surely, 2^64732623745 is an apocalyptic number.

It is an amenable number.

64732623745 is a deficient number, since it is larger than the sum of its proper divisors (14099064575).

64732623745 is a wasteful number, since it uses less digits than its factorization.

64732623745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135416.

The product of its digits is 5080320, while the sum is 49.

Subtracting from 64732623745 its reverse (54732623746), we obtain a palindrome (9999999999).

The spelling of 64732623745 in words is "sixty-four billion, seven hundred thirty-two million, six hundred twenty-three thousand, seven hundred forty-five".