64455731265 has 32 divisors (see below), whose sum is σ = 103416445440. Its totient is φ = 34280750336.

The previous prime is 64455731243. The next prime is 64455731281. The reversal of 64455731265 is 56213755446.

It is a cyclic number.

It is not a de Polignac number, because 64455731265 - 2⁶ = 64455731201 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, 12083539 + ... + 12088871.

It is an arithmetic number, because the mean of its divisors is an integer number (3231763920).

Almost surely, 2^64455731265 is an apocalyptic number.

It is an amenable number.

64455731265 is a deficient number, since it is larger than the sum of its proper divisors (38960714175).

64455731265 is a wasteful number, since it uses less digits than its factorization.

64455731265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433.

The product of its digits is 3024000, while the sum is 48.

The spelling of 64455731265 in words is "sixty-four billion, four hundred fifty-five million, seven hundred thirty-one thousand, two hundred sixty-five".