5661885231 has 8 divisors (see below), whose sum is σ = 8387978160. Its totient is φ = 3774590136.

The previous prime is 5661885223. The next prime is 5661885233. The reversal of 5661885231 is 1325881665.

5661885231 is a `hidden beast` number, since 5 + 6 + 618 + 8 + 5 + 23 + 1 = 666.

It is not a de Polignac number, because 5661885231 - 2³ = 5661885223 is a prime.

It is a super-2 number, since 2×5661885231² = 64113888738031846722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661885233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104849700 + ... + 104849753.

It is an arithmetic number, because the mean of its divisors is an integer number (1048497270).

Almost surely, 2^5661885231 is an apocalyptic number.

5661885231 is a deficient number, since it is larger than the sum of its proper divisors (2726092929).

5661885231 is a wasteful number, since it uses less digits than its factorization.

5661885231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209699462 (or 209699456 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 5661885231 is about 75245.4997391871. The cubic root of 5661885231 is about 1782.3254997240.

The spelling of 5661885231 in words is "five billion, six hundred sixty-one million, eight hundred eighty-five thousand, two hundred thirty-one".