621472756903131 has 12 divisors (see below), whose sum is σ = 963916929074472. Its totient is φ = 355127289658848.

The previous prime is 621472756903127. The next prime is 621472756903139. The reversal of 621472756903131 is 131309657274126.

It is not a de Polignac number, because 621472756903131 - 2² = 621472756903127 is a prime.

It is a super-2 number, since 2×621472756903131² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (621472756903139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2113852914490 + ... + 2113852914783.

It is an arithmetic number, because the mean of its divisors is an integer number (80326410756206).

Almost surely, 2^{621472756903131} is an apocalyptic number.

621472756903131 is a deficient number, since it is larger than the sum of its proper divisors (342444172171341).

621472756903131 is a wasteful number, since it uses less digits than its factorization.

621472756903131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227705829290 (or 4227705829283 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 57.

The spelling of 621472756903131 in words is "six hundred twenty-one trillion, four hundred seventy-two billion, seven hundred fifty-six million, nine hundred three thousand, one hundred thirty-one".