621331172000 has 576 divisors, whose sum is σ = 1957925354112. Its totient is φ = 191600640000.

The previous prime is 621331171999. The next prime is 621331172051. The reversal of 621331172000 is 271133126.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 209130515 + ... + 209133485.

It is an arithmetic number, because the mean of its divisors is an integer number (3399175962).

Almost surely, 2^621331172000 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 621331172000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (978962677056).

621331172000 is an abundant number, since it is smaller than the sum of its proper divisors (1336594182112).

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

621331172000 is a wasteful number, since it uses less digits than its factorization.

621331172000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118 (or 3093 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The spelling of 621331172000 in words is "six hundred twenty-one billion, three hundred thirty-one million, one hundred seventy-two thousand".