131513666617 has 4 divisors (see below), whose sum is σ = 131515312896. Its totient is φ = 131512020340.

The previous prime is 131513666597. The next prime is 131513666657. The reversal of 131513666617 is 716666315131.

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 131513666617 - 2⁷ = 131513666489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131513666657) 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, 696853 + ... + 865234.

It is an arithmetic number, because the mean of its divisors is an integer number (32878828224).

Almost surely, 2^131513666617 is an apocalyptic number.

It is an amenable number.

131513666617 is a deficient number, since it is larger than the sum of its proper divisors (1646279).

131513666617 is an equidigital number, since it uses as much as digits as its factorization.

131513666617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646278.

The product of its digits is 408240, while the sum is 46.

The spelling of 131513666617 in words is "one hundred thirty-one billion, five hundred thirteen million, six hundred sixty-six thousand, six hundred seventeen".