813653944312 has 64 divisors (see below), whose sum is σ = 1673330400000. Its totient is φ = 367835719680.

The previous prime is 813653944253. The next prime is 813653944331. The reversal of 813653944312 is 213449356318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51459864 + ... + 51475672.

It is an arithmetic number, because the mean of its divisors is an integer number (26145787500).

Almost surely, 2^813653944312 is an apocalyptic number.

It is an amenable number.

813653944312 is an abundant number, since it is smaller than the sum of its proper divisors (859676455688).

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

813653944312 is a wasteful number, since it uses less digits than its factorization.

813653944312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18964 (or 18960 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The spelling of 813653944312 in words is "eight hundred thirteen billion, six hundred fifty-three million, nine hundred forty-four thousand, three hundred twelve".