645650616360 has 64 divisors (see below), whose sum is σ = 1956129626880. Its totient is φ = 170468806400.

The previous prime is 645650616293. The next prime is 645650616407. The reversal of 645650616360 is 63616056546.

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, 26623632 + ... + 26647871.

It is an arithmetic number, because the mean of its divisors is an integer number (30564525420).

Almost surely, 2^645650616360 is an apocalyptic number.

645650616360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

645650616360 is an abundant number, since it is smaller than the sum of its proper divisors (1310479010520).

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

645650616360 is a wasteful number, since it uses less digits than its factorization.

645650616360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53271618 (or 53271614 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 645650616360 in words is "six hundred forty-five billion, six hundred fifty million, six hundred sixteen thousand, three hundred sixty".