131561858757 has 12 divisors (see below), whose sum is σ = 204055128096. Its totient is φ = 75178204920.

The previous prime is 131561858711. The next prime is 131561858801. The reversal of 131561858757 is 757858165131.

It is not a de Polignac number, because 131561858757 - 2²³ = 131553470149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131561858697 and 131561858706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131561858957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 447489169 + ... + 447489462.

It is an arithmetic number, because the mean of its divisors is an integer number (17004594008).

Almost surely, 2^131561858757 is an apocalyptic number.

It is an amenable number.

131561858757 is a deficient number, since it is larger than the sum of its proper divisors (72493269339).

131561858757 is an equidigital number, since it uses as much as digits as its factorization.

131561858757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894978648 (or 894978641 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 57.

The spelling of 131561858757 in words is "one hundred thirty-one billion, five hundred sixty-one million, eight hundred fifty-eight thousand, seven hundred fifty-seven".