86919813423 has 16 divisors (see below), whose sum is σ = 128798782560. Its totient is φ = 57933632448.

The previous prime is 86919813401. The next prime is 86919813433. The reversal of 86919813423 is 32431891968.

It is not a de Polignac number, because 86919813423 - 2²⁰ = 86918764847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86919813423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86919813433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234390 + ... + 478307.

It is an arithmetic number, because the mean of its divisors is an integer number (8049923910).

Almost surely, 2^86919813423 is an apocalyptic number.

86919813423 is a deficient number, since it is larger than the sum of its proper divisors (41878969137).

86919813423 is a wasteful number, since it uses less digits than its factorization.

86919813423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717223 (or 717217 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 86919813423 in words is "eighty-six billion, nine hundred nineteen million, eight hundred thirteen thousand, four hundred twenty-three".