86858525433231 has 16 divisors (see below), whose sum is σ = 132830242001920. Its totient is φ = 56037758343480.

The previous prime is 86858525433221. The next prime is 86858525433241. The reversal of 86858525433231 is 13233452585868.

86858525433231 is a `hidden beast` number, since 8 + 6 + 8 + 5 + 8 + 52 + 543 + 3 + 2 + 31 = 666.

It is an interprime number because it is at equal distance from previous prime (86858525433221) and next prime (86858525433241).

It is not a de Polignac number, because 86858525433231 - 2⁹ = 86858525432719 is a prime.

It is a super-2 number, since 2×86858525433231² (a number of 29 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 (86858525433221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51886812445 + ... + 51886814118.

It is an arithmetic number, because the mean of its divisors is an integer number (8301890125120).

Almost surely, 2^{86858525433231} is an apocalyptic number.

86858525433231 is a deficient number, since it is larger than the sum of its proper divisors (45971716568689).

86858525433231 is a wasteful number, since it uses less digits than its factorization.

86858525433231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103773626603 (or 103773626597 counting only the distinct ones).

The product of its digits is 165888000, while the sum is 63.

The spelling of 86858525433231 in words is "eighty-six trillion, eight hundred fifty-eight billion, five hundred twenty-five million, four hundred thirty-three thousand, two hundred thirty-one".