621448925896 has 16 divisors (see below), whose sum is σ = 1187201958300. Its totient is φ = 304861737024.

The previous prime is 621448925893. The next prime is 621448925947. The reversal of 621448925896 is 698529844126.

It can be written as a sum of positive squares in 2 ways, for example, as 581995048996 + 39453876900 = 762886^2 + 198630^2 .

It is not an unprimeable number, because it can be changed into a prime (621448925893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732840291 + ... + 732841138.

Almost surely, 2^621448925896 is an apocalyptic number.

It is an amenable number.

621448925896 is a deficient number, since it is larger than the sum of its proper divisors (565753032404).

621448925896 is a wasteful number, since it uses less digits than its factorization.

621448925896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465681488 (or 1465681484 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 64.

The spelling of 621448925896 in words is "six hundred twenty-one billion, four hundred forty-eight million, nine hundred twenty-five thousand, eight hundred ninety-six".