645325733630 has 16 divisors (see below), whose sum is σ = 1164914654400. Its totient is φ = 257390663712.

The previous prime is 645325733629. The next prime is 645325733651. The reversal of 645325733630 is 36337523546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92450054 + ... + 92457033.

It is an arithmetic number, because the mean of its divisors is an integer number (72807165900).

Almost surely, 2^645325733630 is an apocalyptic number.

645325733630 is a deficient number, since it is larger than the sum of its proper divisors (519588920770).

645325733630 is a wasteful number, since it uses less digits than its factorization.

645325733630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184907443.

The product of its (nonzero) digits is 4082400, while the sum is 47.

The spelling of 645325733630 in words is "six hundred forty-five billion, three hundred twenty-five million, seven hundred thirty-three thousand, six hundred thirty".