86172521080 has 64 divisors (see below), whose sum is σ = 199842655680. Its totient is φ = 33426355200.

The previous prime is 86172521069. The next prime is 86172521089. The reversal of 86172521080 is 8012527168.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86172521089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75469 + ... + 421948.

It is an arithmetic number, because the mean of its divisors is an integer number (3122541495).

Almost surely, 2^86172521080 is an apocalyptic number.

It is an amenable number.

86172521080 is an abundant number, since it is smaller than the sum of its proper divisors (113670134600).

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

86172521080 is a wasteful number, since it uses less digits than its factorization.

86172521080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497560 (or 497556 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 86172521080 in words is "eighty-six billion, one hundred seventy-two million, five hundred twenty-one thousand, eighty".