813819468140 has 48 divisors (see below), whose sum is σ = 2068058889792. Its totient is φ = 262610651136.

The previous prime is 813819468131. The next prime is 813819468173. The reversal of 813819468140 is 41864918318.

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, 170968097 + ... + 170972856.

It is an arithmetic number, because the mean of its divisors is an integer number (43084560204).

Almost surely, 2^813819468140 is an apocalyptic number.

It is an amenable number.

813819468140 is an abundant number, since it is smaller than the sum of its proper divisors (1254239421652).

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

813819468140 is a wasteful number, since it uses less digits than its factorization.

813819468140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341940986 (or 341940984 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 53.

The spelling of 813819468140 in words is "eight hundred thirteen billion, eight hundred nineteen million, four hundred sixty-eight thousand, one hundred forty".