86400520818 has 16 divisors (see below), whose sum is σ = 176061439296. Its totient is φ = 28256774000.

The previous prime is 86400520781. The next prime is 86400520837. The reversal of 86400520818 is 81802500468.

It is a self number, because there is not a number n which added to its sum of digits gives 86400520818.

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, 135849558 + ... + 135850193.

It is an arithmetic number, because the mean of its divisors is an integer number (11003839956).

Almost surely, 2^86400520818 is an apocalyptic number.

86400520818 is an abundant number, since it is smaller than the sum of its proper divisors (89660918478).

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

86400520818 is a wasteful number, since it uses less digits than its factorization.

86400520818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271699809.

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 86400520818 in words is "eighty-six billion, four hundred million, five hundred twenty thousand, eight hundred eighteen".