812133627723 has 60 divisors (see below), whose sum is σ = 1337084458864. Its totient is φ = 490880412000.

The previous prime is 812133627713. The next prime is 812133627731. The reversal of 812133627723 is 327726331218.

It is a happy number.

812133627723 is a `hidden beast` number, since 8 + 1 + 2 + 13 + 3 + 627 + 7 + 2 + 3 = 666.

It is not a de Polignac number, because 812133627723 - 2⁸ = 812133627467 is a prime.

It is a super-2 number, since 2×812133627723² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (812133627713) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3544698 + ... + 3766848.

Almost surely, 2^812133627723 is an apocalyptic number.

812133627723 is a deficient number, since it is larger than the sum of its proper divisors (524950831141).

812133627723 is a wasteful number, since it uses less digits than its factorization.

812133627723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222558 (or 222538 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The spelling of 812133627723 in words is "eight hundred twelve billion, one hundred thirty-three million, six hundred twenty-seven thousand, seven hundred twenty-three".