815813358152 has 32 divisors (see below), whose sum is σ = 1647494311680. Its totient is φ = 376488356160.

The previous prime is 815813358149. The next prime is 815813358167. The reversal of 815813358152 is 251853318518.

It is a self number, because there is not a number n which added to its sum of digits gives 815813358152.

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, 547103 + ... + 1389585.

It is an arithmetic number, because the mean of its divisors is an integer number (51484197240).

Almost surely, 2^815813358152 is an apocalyptic number.

It is an amenable number.

815813358152 is an abundant number, since it is smaller than the sum of its proper divisors (831680953528).

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

815813358152 is a wasteful number, since it uses less digits than its factorization.

815813358152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851813 (or 851809 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 50.

The spelling of 815813358152 in words is "eight hundred fifteen billion, eight hundred thirteen million, three hundred fifty-eight thousand, one hundred fifty-two".