64988715404936 has 8 divisors (see below), whose sum is σ = 121853841384270. Its totient is φ = 32494357702464.

The previous prime is 64988715404923. The next prime is 64988715404941. The reversal of 64988715404936 is 63940451788946.

It can be written as a sum of positive squares in only one way, i.e., 33154633096036 + 31834082308900 = 5758006^2 + 5642170^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4061794712801 + ... + 4061794712816.

Almost surely, 2^{64988715404936} is an apocalyptic number.

It is an amenable number.

64988715404936 is a deficient number, since it is larger than the sum of its proper divisors (56865125979334).

64988715404936 is a wasteful number, since it uses less digits than its factorization.

64988715404936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8123589425623 (or 8123589425619 counting only the distinct ones).

The product of its (nonzero) digits is 1254113280, while the sum is 74.

The spelling of 64988715404936 in words is "sixty-four trillion, nine hundred eighty-eight billion, seven hundred fifteen million, four hundred four thousand, nine hundred thirty-six".