813752786730 has 64 divisors (see below), whose sum is σ = 2103832523520. Its totient is φ = 200251754496.

The previous prime is 813752786729. The next prime is 813752786783. The reversal of 813752786730 is 37687257318.

It is a super-4 number, since 4×813752786730⁴ (a number of 49 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1094874 + ... + 1681146.

It is an arithmetic number, because the mean of its divisors is an integer number (32872383180).

Almost surely, 2^813752786730 is an apocalyptic number.

813752786730 is an abundant number, since it is smaller than the sum of its proper divisors (1290079736790).

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

813752786730 is a wasteful number, since it uses less digits than its factorization.

813752786730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589855.

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 813752786730 in words is "eight hundred thirteen billion, seven hundred fifty-two million, seven hundred eighty-six thousand, seven hundred thirty".