86929816591 has 16 divisors (see below), whose sum is σ = 92378216448. Its totient is φ = 81519177600.

The previous prime is 86929816573. The next prime is 86929816639. The reversal of 86929816591 is 19561892968.

It is a cyclic number.

It is not a de Polignac number, because 86929816591 - 2⁹ = 86929816079 is a prime.

It is a super-2 number, since 2×86929816591² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86929816511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5387626 + ... + 5403736.

It is an arithmetic number, because the mean of its divisors is an integer number (5773638528).

Almost surely, 2^86929816591 is an apocalyptic number.

86929816591 is a deficient number, since it is larger than the sum of its proper divisors (5448399857).

86929816591 is a wasteful number, since it uses less digits than its factorization.

86929816591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17262.

The product of its digits is 16796160, while the sum is 64.

The spelling of 86929816591 in words is "eighty-six billion, nine hundred twenty-nine million, eight hundred sixteen thousand, five hundred ninety-one".