131700661657661 has 8 divisors (see below), whose sum is σ = 132363593611200. Its totient is φ = 131037740900352.

The previous prime is 131700661657619. The next prime is 131700661657699. The reversal of 131700661657661 is 166756166007131.

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

It is a cyclic number.

It is not a de Polignac number, because 131700661657661 - 2⁶ = 131700661657597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131700661657597 and 131700661657606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131700661657561) 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, 21307226 + ... + 26784308.

It is an arithmetic number, because the mean of its divisors is an integer number (16545449201400).

Almost surely, 2^{131700661657661} is an apocalyptic number.

It is an amenable number.

131700661657661 is a deficient number, since it is larger than the sum of its proper divisors (662931953539).

131700661657661 is a wasteful number, since it uses less digits than its factorization.

131700661657661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598115.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 131700661657661 in words is "one hundred thirty-one trillion, seven hundred billion, six hundred sixty-one million, six hundred fifty-seven thousand, six hundred sixty-one".