64757875972 has 6 divisors (see below), whose sum is σ = 113326282958. Its totient is φ = 32378937984.

The previous prime is 64757875967. The next prime is 64757875979. The reversal of 64757875972 is 27957875746.

64757875972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 60563241216 + 4194634756 = 246096^2 + 64766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64757875898 and 64757875907.

It is not an unprimeable number, because it can be changed into a prime (64757875979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8094734493 + ... + 8094734500.

Almost surely, 2^64757875972 is an apocalyptic number.

It is an amenable number.

64757875972 is a deficient number, since it is larger than the sum of its proper divisors (48568406986).

64757875972 is a wasteful number, since it uses less digits than its factorization.

64757875972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16189468997 (or 16189468995 counting only the distinct ones).

The product of its digits is 207446400, while the sum is 67.

The spelling of 64757875972 in words is "sixty-four billion, seven hundred fifty-seven million, eight hundred seventy-five thousand, nine hundred seventy-two".