131890666529 has 4 divisors (see below), whose sum is σ = 134957891376. Its totient is φ = 128823441684.

The previous prime is 131890666447. The next prime is 131890666541. The reversal of 131890666529 is 925666098131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131890666529 - 2⁸ = 131890666273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131890666549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533612359 + ... + 1533612444.

It is an arithmetic number, because the mean of its divisors is an integer number (33739472844).

Almost surely, 2^131890666529 is an apocalyptic number.

It is an amenable number.

131890666529 is a deficient number, since it is larger than the sum of its proper divisors (3067224847).

131890666529 is an equidigital number, since it uses as much as digits as its factorization.

131890666529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067224846.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 131890666529 in words is "one hundred thirty-one billion, eight hundred ninety million, six hundred sixty-six thousand, five hundred twenty-nine".