812512130688 has 192 divisors, whose sum is σ = 2462641365600. Its totient is φ = 256426850304.

The previous prime is 812512130629. The next prime is 812512130699. The reversal of 812512130688 is 886031215218.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39103470 + ... + 39124242.

Almost surely, 2^812512130688 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 812512130688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231320682800).

812512130688 is an abundant number, since it is smaller than the sum of its proper divisors (1650129234912).

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

812512130688 is a wasteful number, since it uses less digits than its factorization.

812512130688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22599 (or 22584 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 812512130688 in words is "eight hundred twelve billion, five hundred twelve million, one hundred thirty thousand, six hundred eighty-eight".