5621172440 has 32 divisors (see below), whose sum is σ = 13620534480. Its totient is φ = 2075509632.

The previous prime is 5621172397. The next prime is 5621172503. The reversal of 5621172440 is 442711265.

It is a junction number, because it is equal to n+sod(n) for n = 5621172397 and 5621172406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5404454 + ... + 5405493.

Almost surely, 2^5621172440 is an apocalyptic number.

It is an amenable number.

5621172440 is an abundant number, since it is smaller than the sum of its proper divisors (7999362040).

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

5621172440 is a wasteful number, since it uses less digits than its factorization.

5621172440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10809971 (or 10809967 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 5621172440 is about 74974.4785910512. The cubic root of 5621172440 is about 1778.0431763440.

The spelling of 5621172440 in words is "five billion, six hundred twenty-one million, one hundred seventy-two thousand, four hundred forty".