64696370012020 has 48 divisors (see below), whose sum is σ = 136959272201808. Its totient is φ = 25669905996800.

The previous prime is 64696370011991. The next prime is 64696370012023. The reversal of 64696370012020 is 2021007369646.

It can be written as a sum of positive squares in 8 ways, for example, as 609364461924 + 64087005550096 = 780618^2 + 8005436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64696370012023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5509747 + ... + 12639226.

It is an arithmetic number, because the mean of its divisors is an integer number (2853318170871).

Almost surely, 2^{64696370012020} is an apocalyptic number.

It is an amenable number.

64696370012020 is an abundant number, since it is smaller than the sum of its proper divisors (72262902189788).

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

64696370012020 is a wasteful number, since it uses less digits than its factorization.

64696370012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18150420 (or 18150418 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 64696370012020 in words is "sixty-four trillion, six hundred ninety-six billion, three hundred seventy million, twelve thousand, twenty".