813550384854 has 12 divisors (see below), whose sum is σ = 1762692500556. Its totient is φ = 271183461612.

The previous prime is 813550384781. The next prime is 813550384859. The reversal of 813550384854 is 458483055318.

813550384854 is a `hidden beast` number, since 8 + 1 + 3 + 5 + 503 + 84 + 8 + 54 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 813550384854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813550384859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22598621784 + ... + 22598621819.

It is an arithmetic number, because the mean of its divisors is an integer number (146891041713).

Almost surely, 2^813550384854 is an apocalyptic number.

813550384854 is an abundant number, since it is smaller than the sum of its proper divisors (949142115702).

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

813550384854 is a wasteful number, since it uses less digits than its factorization.

813550384854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45197243611 (or 45197243608 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 54.

The spelling of 813550384854 in words is "eight hundred thirteen billion, five hundred fifty million, three hundred eighty-four thousand, eight hundred fifty-four".