621237316474368 has 480 divisors, whose sum is σ = 2075082369085440. Its totient is φ = 176941309870080.

The previous prime is 621237316474343. The next prime is 621237316474381. The reversal of 621237316474368 is 863474613732126.

621237316474368 is a `hidden beast` number, since 6 + 2 + 1 + 2 + 37 + 3 + 164 + 7 + 436 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119770546 + ... + 124849742.

It is an arithmetic number, because the mean of its divisors is an integer number (4323088268928).

Almost surely, 2^{621237316474368} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621237316474368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1037541184542720).

621237316474368 is an abundant number, since it is smaller than the sum of its proper divisors (1453845052611072).

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

621237316474368 is a wasteful number, since it uses less digits than its factorization.

621237316474368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079378 (or 5079359 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 63.

The spelling of 621237316474368 in words is "six hundred twenty-one trillion, two hundred thirty-seven billion, three hundred sixteen million, four hundred seventy-four thousand, three hundred sixty-eight".