131256617755 has 8 divisors (see below), whose sum is σ = 166773114432. Its totient is φ = 98828512128.

The previous prime is 131256617719. The next prime is 131256617831. The reversal of 131256617755 is 557716652131.

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 131256617755 - 2⁹ = 131256617243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131256617699 and 131256617708.

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, 772097667 + ... + 772097836.

It is an arithmetic number, because the mean of its divisors is an integer number (20846639304).

Almost surely, 2^131256617755 is an apocalyptic number.

131256617755 is a deficient number, since it is larger than the sum of its proper divisors (35516496677).

131256617755 is a wasteful number, since it uses less digits than its factorization.

131256617755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544195525.

The product of its digits is 1323000, while the sum is 49.

The spelling of 131256617755 in words is "one hundred thirty-one billion, two hundred fifty-six million, six hundred seventeen thousand, seven hundred fifty-five".