86172569808 has 40 divisors (see below), whose sum is σ = 239736510048. Its totient is φ = 26514636672.

The previous prime is 86172569759. The next prime is 86172569927. The reversal of 86172569808 is 80896527168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69047910 + ... + 69049157.

Almost surely, 2^86172569808 is an apocalyptic number.

It is an amenable number.

86172569808 is an abundant number, since it is smaller than the sum of its proper divisors (153563940240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86172569808 is a wasteful number, since it uses less digits than its factorization.

86172569808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138097091 (or 138097085 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 60.

The spelling of 86172569808 in words is "eighty-six billion, one hundred seventy-two million, five hundred sixty-nine thousand, eight hundred eight".