13661615023 has 16 divisors (see below), whose sum is σ = 16101573120. Its totient is φ = 11349324000.

The previous prime is 13661614999. The next prime is 13661615041. The reversal of 13661615023 is 32051616631.

It is a de Polignac number, because none of the positive numbers 2^k-13661615023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13661615023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13661615063) 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, 203628 + ... + 262273.

It is an arithmetic number, because the mean of its divisors is an integer number (1006348320).

Almost surely, 2^13661615023 is an apocalyptic number.

13661615023 is a deficient number, since it is larger than the sum of its proper divisors (2439958097).

13661615023 is an equidigital number, since it uses as much as digits as its factorization.

13661615023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466038.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 13661615023 in words is "thirteen billion, six hundred sixty-one million, six hundred fifteen thousand, twenty-three".