86971813123 has 8 divisors (see below), whose sum is σ = 95654760768. Its totient is φ = 78573552384.

The previous prime is 86971813111. The next prime is 86971813139. The reversal of 86971813123 is 32131817968.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86971813123 - 2²⁵ = 86938258691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86971813823) 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 7 ways as a sum of consecutive naturals, for example, 71171086 + ... + 71172307.

It is an arithmetic number, because the mean of its divisors is an integer number (11956845096).

Almost surely, 2^86971813123 is an apocalyptic number.

86971813123 is a deficient number, since it is larger than the sum of its proper divisors (8682947645).

86971813123 is a wasteful number, since it uses less digits than its factorization.

86971813123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142343453.

The product of its digits is 435456, while the sum is 49.

The spelling of 86971813123 in words is "eighty-six billion, nine hundred seventy-one million, eight hundred thirteen thousand, one hundred twenty-three".