813215270832 has 160 divisors (see below), whose sum is σ = 2283663360000. Its totient is φ = 248416968960.

The previous prime is 813215270809. The next prime is 813215270891. The reversal of 813215270832 is 238072512318.

It is a super-2 number, since 2×813215270832² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93264969 + ... + 93273687.

It is an arithmetic number, because the mean of its divisors is an integer number (14272896000).

Almost surely, 2^813215270832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 813215270832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1141831680000).

813215270832 is an abundant number, since it is smaller than the sum of its proper divisors (1470448089168).

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

813215270832 is a wasteful number, since it uses less digits than its factorization.

813215270832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12079 (or 12073 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 813215270832 in words is "eight hundred thirteen billion, two hundred fifteen million, two hundred seventy thousand, eight hundred thirty-two".