32131810992561 has 8 divisors (see below), whose sum is σ = 48962759607744. Its totient is φ = 18361034852880.

The previous prime is 32131810992539. The next prime is 32131810992583. The reversal of 32131810992561 is 16529901813123.

It is an interprime number because it is at equal distance from previous prime (32131810992539) and next prime (32131810992583).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 32131810992561 - 2⁹ = 32131810992049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32131810992511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765043118850 + ... + 765043118891.

It is an arithmetic number, because the mean of its divisors is an integer number (6120344950968).

Almost surely, 2^{32131810992561} is an apocalyptic number.

It is an amenable number.

32131810992561 is a deficient number, since it is larger than the sum of its proper divisors (16830948615183).

32131810992561 is a wasteful number, since it uses less digits than its factorization.

32131810992561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530086237751.

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 32131810992561 in words is "thirty-two trillion, one hundred thirty-one billion, eight hundred ten million, nine hundred ninety-two thousand, five hundred sixty-one".