646388890047300 has 72 divisors (see below), whose sum is σ = 1893892174115200. Its totient is φ = 170188467246720.

The previous prime is 646388890047287. The next prime is 646388890047301. The reversal of 646388890047300 is 3740098883646.

It is not an unprimeable number, because it can be changed into a prime (646388890047301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13636872715 + ... + 13636920114.

Almost surely, 2^{646388890047300} is an apocalyptic number.

646388890047300 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

646388890047300 is an abundant number, since it is smaller than the sum of its proper divisors (1247503284067900).

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

646388890047300 is a wasteful number, since it uses less digits than its factorization.

646388890047300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27273792925 (or 27273792918 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 66.

The spelling of 646388890047300 in words is "six hundred forty-six trillion, three hundred eighty-eight billion, eight hundred ninety million, forty-seven thousand, three hundred".