6531992991356 has 12 divisors (see below), whose sum is σ = 13063985982768. Its totient is φ = 2799425567712.

The previous prime is 6531992991317. The next prime is 6531992991367.

6531992991356 is nontrivially palindromic in base 10.

6531992991356 is an admirable number.

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 116642731961 + ... + 116642732016.

It is an arithmetic number, because the mean of its divisors is an integer number (1088665498564).

Almost surely, 2^{6531992991356} is an apocalyptic number.

It is an amenable number.

6531992991356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6531992991356 is a wasteful number, since it uses less digits than its factorization.

6531992991356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233285463988 (or 233285463986 counting only the distinct ones).

The product of its digits is 106288200, while the sum is 68.

The spelling of 6531992991356 in words is "six trillion, five hundred thirty-one billion, nine hundred ninety-two million, nine hundred ninety-one thousand, three hundred fifty-six".