645046653106100 has 72 divisors (see below), whose sum is σ = 1600069392212928. Its totient is φ = 221109954912000.

The previous prime is 645046653106039. The next prime is 645046653106127. The reversal of 645046653106100 is 1601356640546.

645046653106100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 98701601 + ... + 105033800.

Almost surely, 2^{645046653106100} is an apocalyptic number.

It is an amenable number.

645046653106100 is an abundant number, since it is smaller than the sum of its proper divisors (955022739106828).

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

645046653106100 is a wasteful number, since it uses less digits than its factorization.

645046653106100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203739945 (or 203739938 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 645046653106100 in words is "six hundred forty-five trillion, forty-six billion, six hundred fifty-three million, one hundred six thousand, one hundred".