813315200870 has 16 divisors (see below), whose sum is σ = 1464039854208. Its totient is φ = 325309970880.

The previous prime is 813315200849. The next prime is 813315200881. The reversal of 813315200870 is 78002513318.

It is a happy number.

It is a super-2 number, since 2×813315200870² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent 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, 1800566 + ... + 2206505.

It is an arithmetic number, because the mean of its divisors is an integer number (91502490888).

Almost surely, 2^813315200870 is an apocalyptic number.

813315200870 is a deficient number, since it is larger than the sum of its proper divisors (650724653338).

813315200870 is a wasteful number, since it uses less digits than its factorization.

813315200870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027375.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 813315200870 in words is "eight hundred thirteen billion, three hundred fifteen million, two hundred thousand, eight hundred seventy".