64065764772388 has 12 divisors (see below), whose sum is σ = 113788447879792. Its totient is φ = 31554779663880.

The previous prime is 64065764772371. The next prime is 64065764772391. The reversal of 64065764772388 is 88327746756046.

It is a self number, because there is not a number n which added to its sum of digits gives 64065764772388.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119525680278 + ... + 119525680813.

Almost surely, 2^{64065764772388} is an apocalyptic number.

It is an amenable number.

64065764772388 is a deficient number, since it is larger than the sum of its proper divisors (49722683107404).

64065764772388 is a wasteful number, since it uses less digits than its factorization.

64065764772388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239051361162 (or 239051361160 counting only the distinct ones).

The product of its (nonzero) digits is 2275983360, while the sum is 73.

The spelling of 64065764772388 in words is "sixty-four trillion, sixty-five billion, seven hundred sixty-four million, seven hundred seventy-two thousand, three hundred eighty-eight".