86198806555 has 4 divisors (see below), whose sum is σ = 103438567872. Its totient is φ = 68959045240.

The previous prime is 86198806549. The next prime is 86198806579. The reversal of 86198806555 is 55560889168.

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

It is not a de Polignac number, because 86198806555 - 2⁵ = 86198806523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86198806493 and 86198806502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8619880651 + ... + 8619880660.

It is an arithmetic number, because the mean of its divisors is an integer number (25859641968).

Almost surely, 2^86198806555 is an apocalyptic number.

86198806555 is a deficient number, since it is larger than the sum of its proper divisors (17239761317).

86198806555 is a wasteful number, since it uses less digits than its factorization.

86198806555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17239761316.

The product of its (nonzero) digits is 20736000, while the sum is 61.

The spelling of 86198806555 in words is "eighty-six billion, one hundred ninety-eight million, eight hundred six thousand, five hundred fifty-five".