640300364544 has 36 divisors (see below), whose sum is σ = 1704132743096. Its totient is φ = 213433454592.

The previous prime is 640300364537. The next prime is 640300364597. The reversal of 640300364544 is 445463003046.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416861449 + ... + 416862984.

Almost surely, 2^640300364544 is an apocalyptic number.

640300364544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

640300364544 is an abundant number, since it is smaller than the sum of its proper divisors (1063832378552).

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

640300364544 is an equidigital number, since it uses as much as digits as its factorization.

640300364544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833724452 (or 833724438 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 39.

The spelling of 640300364544 in words is "six hundred forty billion, three hundred million, three hundred sixty-four thousand, five hundred forty-four".