131561057735 has 8 divisors (see below), whose sum is σ = 157906195200. Its totient is φ = 105226895584.

The previous prime is 131561057707. The next prime is 131561057741. The reversal of 131561057735 is 537750165131.

It is a happy number.

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 131561057735 - 2³² = 127266090439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2717432 + ... + 2765421.

It is an arithmetic number, because the mean of its divisors is an integer number (19738274400).

Almost surely, 2^131561057735 is an apocalyptic number.

131561057735 is a deficient number, since it is larger than the sum of its proper divisors (26345137465).

131561057735 is an equidigital number, since it uses as much as digits as its factorization.

131561057735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487657.

The product of its (nonzero) digits is 330750, while the sum is 44.

The spelling of 131561057735 in words is "one hundred thirty-one billion, five hundred sixty-one million, fifty-seven thousand, seven hundred thirty-five".