86233831581 has 32 divisors (see below), whose sum is σ = 116852440320. Its totient is φ = 56560379904.

The previous prime is 86233831577. The next prime is 86233831681. The reversal of 86233831581 is 18513833268.

It is not a de Polignac number, because 86233831581 - 2² = 86233831577 is a prime.

It is a super-2 number, since 2×86233831581² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86233831581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86233831501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38965831 + ... + 38968043.

It is an arithmetic number, because the mean of its divisors is an integer number (3651638760).

Almost surely, 2^86233831581 is an apocalyptic number.

It is an amenable number.

86233831581 is a deficient number, since it is larger than the sum of its proper divisors (30618608739).

86233831581 is a wasteful number, since it uses less digits than its factorization.

86233831581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045.

The product of its digits is 829440, while the sum is 48.

The spelling of 86233831581 in words is "eighty-six billion, two hundred thirty-three million, eight hundred thirty-one thousand, five hundred eighty-one".