813814780140 has 36 divisors (see below), whose sum is σ = 2468571500304. Its totient is φ = 217017274656.

The previous prime is 813814780063. The next prime is 813814780187. The reversal of 813814780140 is 41087418318.

813814780140 is a `hidden beast` number, since 8 + 1 + 38 + 1 + 478 + 0 + 140 = 666.

813814780140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2260596432 + ... + 2260596791.

It is an arithmetic number, because the mean of its divisors is an integer number (68571430564).

Almost surely, 2^813814780140 is an apocalyptic number.

It is an amenable number.

813814780140 is an abundant number, since it is smaller than the sum of its proper divisors (1654756720164).

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

813814780140 is a wasteful number, since it uses less digits than its factorization.

813814780140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521193238 (or 4521193233 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 813814780140 in words is "eight hundred thirteen billion, eight hundred fourteen million, seven hundred eighty thousand, one hundred forty".