86171379674 has 4 divisors (see below), whose sum is σ = 129257069514. Its totient is φ = 43085689836.

The previous prime is 86171379667. The next prime is 86171379691. The reversal of 86171379674 is 47697317168.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 76692994225 + 9478385449 = 276935^2 + 97357^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21542844917 + ... + 21542844920.

Almost surely, 2^86171379674 is an apocalyptic number.

86171379674 is a deficient number, since it is larger than the sum of its proper divisors (43085689840).

86171379674 is a wasteful number, since it uses less digits than its factorization.

86171379674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43085689839.

The product of its digits is 10668672, while the sum is 59.

The spelling of 86171379674 in words is "eighty-six billion, one hundred seventy-one million, three hundred seventy-nine thousand, six hundred seventy-four".