86256978241 has 4 divisors (see below), whose sum is σ = 98579403712. Its totient is φ = 73934552772.

The previous prime is 86256978209. The next prime is 86256978257. The reversal of 86256978241 is 14287965268.

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 86256978241 - 2⁵ = 86256978209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86256975241) 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, 6161212725 + ... + 6161212738.

It is an arithmetic number, because the mean of its divisors is an integer number (24644850928).

Almost surely, 2^86256978241 is an apocalyptic number.

It is an amenable number.

86256978241 is a deficient number, since it is larger than the sum of its proper divisors (12322425471).

86256978241 is a wasteful number, since it uses less digits than its factorization.

86256978241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12322425470.

The product of its digits is 11612160, while the sum is 58.

The spelling of 86256978241 in words is "eighty-six billion, two hundred fifty-six million, nine hundred seventy-eight thousand, two hundred forty-one".