86776859317 has 4 divisors (see below), whose sum is σ = 86793321420. Its totient is φ = 86760397216.

The previous prime is 86776859291. The next prime is 86776859353. The reversal of 86776859317 is 71395867768.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65581575921 + 21195283396 = 256089^2 + 145586^2 .

It is a cyclic number.

It is not a de Polignac number, because 86776859317 - 2³⁵ = 52417120949 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 (86776859357) 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, 8223142 + ... + 8233687.

It is an arithmetic number, because the mean of its divisors is an integer number (21698330355).

Almost surely, 2^86776859317 is an apocalyptic number.

It is an amenable number.

86776859317 is a deficient number, since it is larger than the sum of its proper divisors (16462103).

86776859317 is a wasteful number, since it uses less digits than its factorization.

86776859317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16462102.

The product of its digits is 106686720, while the sum is 67.

The spelling of 86776859317 in words is "eighty-six billion, seven hundred seventy-six million, eight hundred fifty-nine thousand, three hundred seventeen".