808816180686 has 16 divisors (see below), whose sum is σ = 1618715857104. Its totient is φ = 269424810944.

The previous prime is 808816180661. The next prime is 808816180687. The reversal of 808816180686 is 686081618808.

It is a super-2 number, since 2×808816180686² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808816180687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45135951 + ... + 45153866.

It is an arithmetic number, because the mean of its divisors is an integer number (101169741069).

Almost surely, 2^808816180686 is an apocalyptic number.

808816180686 is an abundant number, since it is smaller than the sum of its proper divisors (809899676418).

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

808816180686 is a wasteful number, since it uses less digits than its factorization.

808816180686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90291315.

The product of its (nonzero) digits is 7077888, while the sum is 60.

The spelling of 808816180686 in words is "eight hundred eight billion, eight hundred sixteen million, one hundred eighty thousand, six hundred eighty-six".