621325423444 has 96 divisors (see below), whose sum is σ = 1283757027840. Its totient is φ = 260037993600.

The previous prime is 621325423409. The next prime is 621325423469. The reversal of 621325423444 is 444324523126.

It is a super-3 number, since 3×621325423444³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 621325423397 and 621325423406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29281999 + ... + 29303209.

It is an arithmetic number, because the mean of its divisors is an integer number (13372469040).

Almost surely, 2^621325423444 is an apocalyptic number.

It is an amenable number.

621325423444 is an abundant number, since it is smaller than the sum of its proper divisors (662431604396).

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

621325423444 is a wasteful number, since it uses less digits than its factorization.

621325423444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22229 (or 22227 counting only the distinct ones).

The product of its digits is 552960, while the sum is 40.

The spelling of 621325423444 in words is "six hundred twenty-one billion, three hundred twenty-five million, four hundred twenty-three thousand, four hundred forty-four".