813554886813 has 8 divisors (see below), whose sum is σ = 1086401015328. Its totient is φ = 541539341424.

The previous prime is 813554886799. The next prime is 813554886841. The reversal of 813554886813 is 318688455318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 813554886813 - 2¹⁰ = 813554885789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813554887813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207643495 + ... + 207647412.

It is an arithmetic number, because the mean of its divisors is an integer number (135800126916).

Almost surely, 2^813554886813 is an apocalyptic number.

It is an amenable number.

813554886813 is a deficient number, since it is larger than the sum of its proper divisors (272846128515).

813554886813 is a wasteful number, since it uses less digits than its factorization.

813554886813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415291563.

The product of its digits is 22118400, while the sum is 60.

The spelling of 813554886813 in words is "eight hundred thirteen billion, five hundred fifty-four million, eight hundred eighty-six thousand, eight hundred thirteen".