813149040808 has 64 divisors (see below), whose sum is σ = 1653248741760. Its totient is φ = 372722570496.

The previous prime is 813149040763. The next prime is 813149040817. The reversal of 813149040808 is 808040941318.

It is a super-2 number, since 2×813149040808² (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 15 ways as a sum of consecutive naturals, for example, 8798085 + ... + 8890027.

It is an arithmetic number, because the mean of its divisors is an integer number (25832011590).

Almost surely, 2^813149040808 is an apocalyptic number.

It is an amenable number.

813149040808 is an abundant number, since it is smaller than the sum of its proper divisors (840099700952).

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

813149040808 is a wasteful number, since it uses less digits than its factorization.

813149040808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92546 (or 92542 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The spelling of 813149040808 in words is "eight hundred thirteen billion, one hundred forty-nine million, forty thousand, eight hundred eight".