13376431568 has 20 divisors (see below), whose sum is σ = 25920039300. Its totient is φ = 6687389184.

The previous prime is 13376431567. The next prime is 13376431577. The reversal of 13376431568 is 86513467331.

It can be written as a sum of positive squares in 2 ways, for example, as 5729278864 + 7647152704 = 75692^2 + 87448^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13376431567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94346 + ... + 188822.

It is an arithmetic number, because the mean of its divisors is an integer number (1296001965).

Almost surely, 2^13376431568 is an apocalyptic number.

It is an amenable number.

13376431568 is a deficient number, since it is larger than the sum of its proper divisors (12543607732).

13376431568 is an equidigital number, since it uses as much as digits as its factorization.

13376431568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103334 (or 103328 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

Adding to 13376431568 its reverse (86513467331), we get a palindrome (99889898899).

The spelling of 13376431568 in words is "thirteen billion, three hundred seventy-six million, four hundred thirty-one thousand, five hundred sixty-eight".