812892961956 has 24 divisors (see below), whose sum is σ = 1901702605824. Its totient is φ = 270256840480.

The previous prime is 812892961913. The next prime is 812892962083. The reversal of 812892961956 is 659169298218.

It is a happy number.

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, 88430235 + ... + 88439426.

It is an arithmetic number, because the mean of its divisors is an integer number (79237608576).

Almost surely, 2^812892961956 is an apocalyptic number.

It is an amenable number.

812892961956 is an abundant number, since it is smaller than the sum of its proper divisors (1088809643868).

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

812892961956 is a wasteful number, since it uses less digits than its factorization.

812892961956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176870051 (or 176870049 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 66.

The spelling of 812892961956 in words is "eight hundred twelve billion, eight hundred ninety-two million, nine hundred sixty-one thousand, nine hundred fifty-six".