645203401700 has 72 divisors (see below), whose sum is σ = 1644862638720. Its totient is φ = 216571766400.

The previous prime is 645203401679. The next prime is 645203401741. The reversal of 645203401700 is 7104302546.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22545260 + ... + 22573859.

Almost surely, 2^645203401700 is an apocalyptic number.

It is an amenable number.

645203401700 is an abundant number, since it is smaller than the sum of its proper divisors (999659237020).

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

645203401700 is a wasteful number, since it uses less digits than its factorization.

645203401700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45119157 (or 45119150 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 645203401700 in words is "six hundred forty-five billion, two hundred three million, four hundred one thousand, seven hundred".