813554455317 has 16 divisors (see below), whose sum is σ = 1178664069120. Its totient is φ = 497248902000.

The previous prime is 813554455283. The next prime is 813554455321. The reversal of 813554455317 is 713554455318.

It is not a de Polignac number, because 813554455317 - 2¹¹ = 813554453269 is a prime.

It is a super-2 number, since 2×813554455317² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813554455317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813554455367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230206059 + ... + 230209592.

It is an arithmetic number, because the mean of its divisors is an integer number (73666504320).

Almost surely, 2^813554455317 is an apocalyptic number.

It is an amenable number.

813554455317 is a deficient number, since it is larger than the sum of its proper divisors (365109613803).

813554455317 is a wasteful number, since it uses less digits than its factorization.

813554455317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460415704.

The product of its digits is 5040000, while the sum is 51.

Subtracting from 813554455317 its reverse (713554455318), we obtain a palindrome (99999999999).

The spelling of 813554455317 in words is "eight hundred thirteen billion, five hundred fifty-four million, four hundred fifty-five thousand, three hundred seventeen".