5966661831 has 32 divisors (see below), whose sum is σ = 8636725440. Its totient is φ = 3642261504.

The previous prime is 5966661829. The next prime is 5966661851. The reversal of 5966661831 is 1381666695.

It is not a de Polignac number, because 5966661831 - 2¹ = 5966661829 is a prime.

It is a super-2 number, since 2×5966661831² = 71202106811024545122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5966661851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2695081 + ... + 2697293.

It is an arithmetic number, because the mean of its divisors is an integer number (269897670).

Almost surely, 2^5966661831 is an apocalyptic number.

5966661831 is a deficient number, since it is larger than the sum of its proper divisors (2670063609).

5966661831 is a wasteful number, since it uses less digits than its factorization.

5966661831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755.

The product of its digits is 1399680, while the sum is 51.

The square root of 5966661831 is about 77244.1702072072. The cubic root of 5966661831 is about 1813.7488138578.

The spelling of 5966661831 in words is "five billion, nine hundred sixty-six million, six hundred sixty-one thousand, eight hundred thirty-one".