812995251634 has 8 divisors (see below), whose sum is σ = 1219939422768. Its totient is φ = 406348777380.

The previous prime is 812995251619. The next prime is 812995251641. The reversal of 812995251634 is 436152599218.

812995251634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×812995251634² (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 3 ways as a sum of consecutive naturals, for example, 74417392 + ... + 74428315.

It is an arithmetic number, because the mean of its divisors is an integer number (152492427846).

Almost surely, 2^812995251634 is an apocalyptic number.

812995251634 is a deficient number, since it is larger than the sum of its proper divisors (406944171134).

812995251634 is a wasteful number, since it uses less digits than its factorization.

812995251634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148848440.

The product of its digits is 4665600, while the sum is 55.

The spelling of 812995251634 in words is "eight hundred twelve billion, nine hundred ninety-five million, two hundred fifty-one thousand, six hundred thirty-four".