64860736432 has 10 divisors (see below), whose sum is σ = 125667676868. Its totient is φ = 32430368208.

The previous prime is 64860736363. The next prime is 64860736441. The reversal of 64860736432 is 23463706846.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2026897998 + ... + 2026898029.

Almost surely, 2^64860736432 is an apocalyptic number.

It is an amenable number.

64860736432 is a deficient number, since it is larger than the sum of its proper divisors (60806940436).

64860736432 is a wasteful number, since it uses less digits than its factorization.

64860736432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053796035 (or 4053796029 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 49.

The spelling of 64860736432 in words is "sixty-four billion, eight hundred sixty million, seven hundred thirty-six thousand, four hundred thirty-two".