813725047284 has 24 divisors (see below), whose sum is σ = 2010379529088. Its totient is φ = 255286289280.

The previous prime is 813725047283. The next prime is 813725047297. The reversal of 813725047284 is 482740527318.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813725047283) 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, 1994423932 + ... + 1994424339.

It is an arithmetic number, because the mean of its divisors is an integer number (83765813712).

Almost surely, 2^813725047284 is an apocalyptic number.

It is an amenable number.

813725047284 is an abundant number, since it is smaller than the sum of its proper divisors (1196654481804).

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

813725047284 is a wasteful number, since it uses less digits than its factorization.

813725047284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988848295 (or 3988848293 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 813725047284 in words is "eight hundred thirteen billion, seven hundred twenty-five million, forty-seven thousand, two hundred eighty-four".