621163972208 has 40 divisors (see below), whose sum is σ = 1296290948736. Its totient is φ = 286644960000.

The previous prime is 621163972181. The next prime is 621163972237. The reversal of 621163972208 is 802279361126.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073633 + ... + 1547583.

Almost surely, 2^621163972208 is an apocalyptic number.

It is an amenable number.

621163972208 is an abundant number, since it is smaller than the sum of its proper divisors (675126976528).

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

621163972208 is a wasteful number, since it uses less digits than its factorization.

621163972208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480273 (or 480267 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 621163972208 in words is "six hundred twenty-one billion, one hundred sixty-three million, nine hundred seventy-two thousand, two hundred eight".