813743209152 has 56 divisors (see below), whose sum is σ = 2392254346800. Its totient is φ = 271247735808.

The previous prime is 813743209151. The next prime is 813743209189. The reversal of 813743209152 is 251902347318.

It is a happy number.

813743209152 is a `hidden beast` number, since 81 + 3 + 7 + 432 + 0 + 91 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 813743209098 and 813743209107.

It is not an unprimeable number, because it can be changed into a prime (813743209151) 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, 235456377 + ... + 235459832.

Almost surely, 2^813743209152 is an apocalyptic number.

It is an amenable number.

813743209152 is an abundant number, since it is smaller than the sum of its proper divisors (1578511137648).

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

813743209152 is a wasteful number, since it uses less digits than its factorization.

813743209152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470916230 (or 470916214 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 813743209152 in words is "eight hundred thirteen billion, seven hundred forty-three million, two hundred nine thousand, one hundred fifty-two".