64956965888 has 44 divisors (see below), whose sum is σ = 132613372032. Its totient is φ = 31787427840.

The previous prime is 64956965771. The next prime is 64956965893. The reversal of 64956965888 is 88856965946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626708 + ... + 722963.

Almost surely, 2^64956965888 is an apocalyptic number.

It is an amenable number.

64956965888 is an abundant number, since it is smaller than the sum of its proper divisors (67656406144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64956965888 is a wasteful number, since it uses less digits than its factorization.

64956965888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349738 (or 1349720 counting only the distinct ones).

The product of its digits is 895795200, while the sum is 74.

The spelling of 64956965888 in words is "sixty-four billion, nine hundred fifty-six million, nine hundred sixty-five thousand, eight hundred eighty-eight".