5661472631 has 2 divisors, whose sum is σ = 5661472632. Its totient is φ = 5661472630.

The previous prime is 5661472603. The next prime is 5661472639. The reversal of 5661472631 is 1362741665.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5661472631 is a prime.

It is a super-2 number, since 2×5661472631² = 64104544703124124322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5661472639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830736315 + 2830736316.

It is an arithmetic number, because the mean of its divisors is an integer number (2830736316).

Almost surely, 2^5661472631 is an apocalyptic number.

5661472631 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661472631 is an equidigital number, since it uses as much as digits as its factorization.

5661472631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 5661472631 is about 75242.7579970325. The cubic root of 5661472631 is about 1782.2822040527.

The spelling of 5661472631 in words is "five billion, six hundred sixty-one million, four hundred seventy-two thousand, six hundred thirty-one".