13680390023 has 4 divisors (see below), whose sum is σ = 14152127640. Its totient is φ = 13208652408.

The previous prime is 13680389981. The next prime is 13680390037. The reversal of 13680390023 is 32009308631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32009308631 = 233 ⋅137379007.

It is a cyclic number.

It is not a de Polignac number, because 13680390023 - 2²² = 13676195719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13680350023) 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, 235868765 + ... + 235868822.

It is an arithmetic number, because the mean of its divisors is an integer number (3538031910).

Almost surely, 2^13680390023 is an apocalyptic number.

13680390023 is a deficient number, since it is larger than the sum of its proper divisors (471737617).

13680390023 is an equidigital number, since it uses as much as digits as its factorization.

13680390023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471737616.

The product of its (nonzero) digits is 23328, while the sum is 35.

Adding to 13680390023 its reverse (32009308631), we get a palindrome (45689698654).

The spelling of 13680390023 in words is "thirteen billion, six hundred eighty million, three hundred ninety thousand, twenty-three".