808909135827 has 16 divisors (see below), whose sum is σ = 1165614847488. Its totient is φ = 496031254560.

The previous prime is 808909135823. The next prime is 808909135829. The reversal of 808909135827 is 728531909808.

It is not a de Polignac number, because 808909135827 - 2² = 808909135823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (808909135823) 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, 36634299 + ... + 36656372.

It is an arithmetic number, because the mean of its divisors is an integer number (72850927968).

Almost surely, 2^808909135827 is an apocalyptic number.

808909135827 is a deficient number, since it is larger than the sum of its proper divisors (356705711661).

808909135827 is a wasteful number, since it uses less digits than its factorization.

808909135827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73290970.

The product of its (nonzero) digits is 8709120, while the sum is 60.

The spelling of 808909135827 in words is "eight hundred eight billion, nine hundred nine million, one hundred thirty-five thousand, eight hundred twenty-seven".