8138692968319 has 16 divisors (see below), whose sum is σ = 8598756335616. Its totient is φ = 7691708318400.

The previous prime is 8138692968313. The next prime is 8138692968359. The reversal of 8138692968319 is 9138692968318.

It is a cyclic number.

It is not a de Polignac number, because 8138692968319 - 2³⁷ = 8001254014847 is a prime.

It is a super-2 number, since 2×8138692968319² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138692968313) 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, 5445667 + ... + 6777364.

It is an arithmetic number, because the mean of its divisors is an integer number (537422270976).

Almost surely, 2^{8138692968319} is an apocalyptic number.

8138692968319 is a deficient number, since it is larger than the sum of its proper divisors (460063367297).

8138692968319 is a wasteful number, since it uses less digits than its factorization.

8138692968319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12223566.

The product of its digits is 241864704, while the sum is 73.

Subtracting 8138692968319 from its reverse (9138692968318), we obtain a palindrome (999999999999).

The spelling of 8138692968319 in words is "eight trillion, one hundred thirty-eight billion, six hundred ninety-two million, nine hundred sixty-eight thousand, three hundred nineteen".