805077436818 has 16 divisors (see below), whose sum is σ = 1615299142176. Its totient is φ = 267501767520.

The previous prime is 805077436781. The next prime is 805077436861. The reversal of 805077436818 is 818634770508.

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, 214342488 + ... + 214346243.

It is an arithmetic number, because the mean of its divisors is an integer number (100956196386).

Almost surely, 2^805077436818 is an apocalyptic number.

805077436818 is an abundant number, since it is smaller than the sum of its proper divisors (810221705358).

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

805077436818 is a wasteful number, since it uses less digits than its factorization.

805077436818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428689049.

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 805077436818 in words is "eight hundred five billion, seventy-seven million, four hundred thirty-six thousand, eight hundred eighteen".