13681513023 has 16 divisors (see below), whose sum is σ = 18445701120. Its totient is φ = 9019636416.

The previous prime is 13681512979. The next prime is 13681513031. The reversal of 13681513023 is 32031518631.

It is a Cunningham number, because it is equal to 116968²-1.

It is not a de Polignac number, because 13681513023 - 2⁹ = 13681512511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13681513073) 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, 58483 + ... + 175451.

It is an arithmetic number, because the mean of its divisors is an integer number (1152856320).

Almost surely, 2^13681513023 is an apocalyptic number.

13681513023 is a deficient number, since it is larger than the sum of its proper divisors (4764188097).

13681513023 is a wasteful number, since it uses less digits than its factorization.

13681513023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117406.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 13681513023 in words is "thirteen billion, six hundred eighty-one million, five hundred thirteen thousand, twenty-three".