86255896621 has 4 divisors (see below), whose sum is σ = 88091128512. Its totient is φ = 84420664732.

The previous prime is 86255896603. The next prime is 86255896631. The reversal of 86255896621 is 12669855268.

It is a happy number.

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 not a de Polignac number, because 86255896621 - 2¹⁵ = 86255863853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86255896631) 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, 917615875 + ... + 917615968.

It is an arithmetic number, because the mean of its divisors is an integer number (22022782128).

Almost surely, 2^86255896621 is an apocalyptic number.

It is an amenable number.

86255896621 is a deficient number, since it is larger than the sum of its proper divisors (1835231891).

86255896621 is a wasteful number, since it uses less digits than its factorization.

86255896621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835231890.

The product of its digits is 12441600, while the sum is 58.

The spelling of 86255896621 in words is "eighty-six billion, two hundred fifty-five million, eight hundred ninety-six thousand, six hundred twenty-one".