813605102836 has 24 divisors (see below), whose sum is σ = 1428956682944. Its totient is φ = 405332000640.

The previous prime is 813605102803. The next prime is 813605102839. The reversal of 813605102836 is 638201506318.

It is a junction number, because it is equal to n+sod(n) for n = 813605102792 and 813605102801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813605102839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19711276 + ... + 19752508.

Almost surely, 2^813605102836 is an apocalyptic number.

It is an amenable number.

813605102836 is a deficient number, since it is larger than the sum of its proper divisors (615351580108).

813605102836 is a wasteful number, since it uses less digits than its factorization.

813605102836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58951 (or 58949 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 813605102836 in words is "eight hundred thirteen billion, six hundred five million, one hundred two thousand, eight hundred thirty-six".