64859398876900 has 18 divisors (see below), whose sum is σ = 140744895563090. Its totient is φ = 25943759550720.

The previous prime is 64859398876897. The next prime is 64859398876901. The reversal of 64859398876900 is 967889395846.

It can be written as a sum of positive squares in 3 ways, for example, as 10058780147364 + 54800618729536 = 3171558^2 + 7402744^2 .

It is a super-2 number, since 2×64859398876900² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64859398876901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 324296994285 + ... + 324296994484.

Almost surely, 2^{64859398876900} is an apocalyptic number.

It is an amenable number.

64859398876900 is an abundant number, since it is smaller than the sum of its proper divisors (75885496686190).

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

64859398876900 is a wasteful number, since it uses less digits than its factorization.

64859398876900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648593988783 (or 648593988776 counting only the distinct ones).

The product of its (nonzero) digits is 5643509760, while the sum is 82.

The spelling of 64859398876900 in words is "sixty-four trillion, eight hundred fifty-nine billion, three hundred ninety-eight million, eight hundred seventy-six thousand, nine hundred".