5666636531 has 2 divisors, whose sum is σ = 5666636532. Its totient is φ = 5666636530.

The previous prime is 5666636471. The next prime is 5666636539. The reversal of 5666636531 is 1356366665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5666636531 - 2²⁶ = 5599527667 is a prime.

It is a super-2 number, since 2×5666636531² = 64221539148927427922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5666636539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833318265 + 2833318266.

It is an arithmetic number, because the mean of its divisors is an integer number (2833318266).

Almost surely, 2^5666636531 is an apocalyptic number.

5666636531 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666636531 is an equidigital number, since it uses as much as digits as its factorization.

5666636531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 47.

The square root of 5666636531 is about 75277.0651061796. The cubic root of 5666636531 is about 1782.8239200144.

The spelling of 5666636531 in words is "five billion, six hundred sixty-six million, six hundred thirty-six thousand, five hundred thirty-one".