131626610809 has 4 divisors (see below), whose sum is σ = 131631906960. Its totient is φ = 131621314660.

The previous prime is 131626610777. The next prime is 131626610813. The reversal of 131626610809 is 908016626131.

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 131626610809 - 2⁵ = 131626610777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131626610909) 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, 2610619 + ... + 2660560.

It is an arithmetic number, because the mean of its divisors is an integer number (32907976740).

Almost surely, 2^131626610809 is an apocalyptic number.

It is an amenable number.

131626610809 is a deficient number, since it is larger than the sum of its proper divisors (5296151).

131626610809 is an equidigital number, since it uses as much as digits as its factorization.

131626610809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296150.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 131626610809 in words is "one hundred thirty-one billion, six hundred twenty-six million, six hundred ten thousand, eight hundred nine".