86879946161 has 4 divisors (see below), whose sum is σ = 89228052852. Its totient is φ = 84531839472.

The previous prime is 86879946113. The next prime is 86879946211. The reversal of 86879946161 is 16164997868.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63230119936 + 23649826225 = 251456^2 + 153785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86879946161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86879946661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174053290 + ... + 1174053363.

It is an arithmetic number, because the mean of its divisors is an integer number (22307013213).

Almost surely, 2^86879946161 is an apocalyptic number.

It is an amenable number.

86879946161 is a deficient number, since it is larger than the sum of its proper divisors (2348106691).

86879946161 is a wasteful number, since it uses less digits than its factorization.

86879946161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348106690.

The product of its digits is 31352832, while the sum is 65.

The spelling of 86879946161 in words is "eighty-six billion, eight hundred seventy-nine million, nine hundred forty-six thousand, one hundred sixty-one".