6531541188868 has 12 divisors (see below), whose sum is σ = 11436717456220. Its totient is φ = 3263907629952.

The previous prime is 6531541188839. The next prime is 6531541188871. The reversal of 6531541188868 is 8688811451356.

It can be written as a sum of positive squares in 2 ways, for example, as 520718105664 + 6010823083204 = 721608^2 + 2451698^2 .

It is a super-2 number, since 2×6531541188868² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465733233 + ... + 465747256.

Almost surely, 2^{6531541188868} is an apocalyptic number.

It is an amenable number.

6531541188868 is a deficient number, since it is larger than the sum of its proper divisors (4905176267352).

6531541188868 is a wasteful number, since it uses less digits than its factorization.

6531541188868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931482246 (or 931482244 counting only the distinct ones).

The product of its digits is 44236800, while the sum is 64.

The spelling of 6531541188868 in words is "six trillion, five hundred thirty-one billion, five hundred forty-one million, one hundred eighty-eight thousand, eight hundred sixty-eight".