810617313013551 has 6 divisors (see below), whose sum is σ = 1170891674352920. Its totient is φ = 540411542009028.

The previous prime is 810617313013549. The next prime is 810617313013567. The reversal of 810617313013551 is 155310313716018.

810617313013551 is a `hidden beast` number, since 8 + 1 + 0 + 6 + 1 + 73 + 13 + 0 + 13 + 551 = 666.

It is not a de Polignac number, because 810617313013551 - 2¹ = 810617313013549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 810617313013497 and 810617313013506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810617313013351) 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, 45034295167411 + ... + 45034295167428.

Almost surely, 2^{810617313013551} is an apocalyptic number.

810617313013551 is a deficient number, since it is larger than the sum of its proper divisors (360274361339369).

810617313013551 is a wasteful number, since it uses less digits than its factorization.

810617313013551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90068590334845 (or 90068590334842 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

Adding to 810617313013551 its reverse (155310313716018), we get a palindrome (965927626729569).

The spelling of 810617313013551 in words is "eight hundred ten trillion, six hundred seventeen billion, three hundred thirteen million, thirteen thousand, five hundred fifty-one".