621264774320 has 40 divisors (see below), whose sum is σ = 1449145675824. Its totient is φ = 247696434432.

The previous prime is 621264774289. The next prime is 621264774371. The reversal of 621264774320 is 23477462126.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 12623339 + ... + 12672458.

Almost surely, 2^621264774320 is an apocalyptic number.

It is an amenable number.

621264774320 is an abundant number, since it is smaller than the sum of its proper divisors (827880901504).

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

621264774320 is a wasteful number, since it uses less digits than its factorization.

621264774320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25296117 (or 25296111 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 44.

The spelling of 621264774320 in words is "six hundred twenty-one billion, two hundred sixty-four million, seven hundred seventy-four thousand, three hundred twenty".