6624733661631 has 6 divisors (see below), whose sum is σ = 9569059733480. Its totient is φ = 4416489107748.

The previous prime is 6624733661593. The next prime is 6624733661657. The reversal of 6624733661631 is 1361663374266.

6624733661631 is a `hidden beast` number, since 6 + 6 + 2 + 473 + 3 + 6 + 6 + 163 + 1 = 666.

6624733661631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6624733661631 - 2⁷ = 6624733661503 is a prime.

It is a super-2 number, since 2×6624733661631² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6624733661671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 368040758971 + ... + 368040758988.

Almost surely, 2^{6624733661631} is an apocalyptic number.

6624733661631 is a deficient number, since it is larger than the sum of its proper divisors (2944326071849).

6624733661631 is a wasteful number, since it uses less digits than its factorization.

6624733661631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736081517965 (or 736081517962 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 54.

The spelling of 6624733661631 in words is "six trillion, six hundred twenty-four billion, seven hundred thirty-three million, six hundred sixty-one thousand, six hundred thirty-one".