645451434316 has 48 divisors (see below), whose sum is σ = 1218310480800. Its totient is φ = 297439990272.

The previous prime is 645451434247. The next prime is 645451434349. The reversal of 645451434316 is 613434154546.

645451434316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113453200 + ... + 113458888.

It is an arithmetic number, because the mean of its divisors is an integer number (25381468350).

Almost surely, 2^645451434316 is an apocalyptic number.

It is an amenable number.

645451434316 is a deficient number, since it is larger than the sum of its proper divisors (572859046484).

645451434316 is a wasteful number, since it uses less digits than its factorization.

645451434316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8698 (or 8696 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 46.

The spelling of 645451434316 in words is "six hundred forty-five billion, four hundred fifty-one million, four hundred thirty-four thousand, three hundred sixteen".