64353945020 has 12 divisors (see below), whose sum is σ = 135143284584. Its totient is φ = 25741578000.

The previous prime is 64353945013. The next prime is 64353945091. The reversal of 64353945020 is 2054935346.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608848606 + ... + 1608848645.

It is an arithmetic number, because the mean of its divisors is an integer number (11261940382).

Almost surely, 2^64353945020 is an apocalyptic number.

It is an amenable number.

64353945020 is an abundant number, since it is smaller than the sum of its proper divisors (70789339564).

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

64353945020 is a wasteful number, since it uses less digits than its factorization.

64353945020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217697260 (or 3217697258 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 64353945020 in words is "sixty-four billion, three hundred fifty-three million, nine hundred forty-five thousand, twenty".