812439896313 has 16 divisors (see below), whose sum is σ = 1084464550400. Its totient is φ = 541021265280.

The previous prime is 812439896309. The next prime is 812439896341. The reversal of 812439896313 is 313698934218.

It is not a de Polignac number, because 812439896313 - 2² = 812439896309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812439896413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9779133 + ... + 9861861.

It is an arithmetic number, because the mean of its divisors is an integer number (67779034400).

Almost surely, 2^812439896313 is an apocalyptic number.

It is an amenable number.

812439896313 is a deficient number, since it is larger than the sum of its proper divisors (272024654087).

812439896313 is a wasteful number, since it uses less digits than its factorization.

812439896313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86352.

The product of its digits is 6718464, while the sum is 57.

The spelling of 812439896313 in words is "eight hundred twelve billion, four hundred thirty-nine million, eight hundred ninety-six thousand, three hundred thirteen".