13598668403 has 4 divisors (see below), whose sum is σ = 13751462520. Its totient is φ = 13445874288.

The previous prime is 13598668393. The next prime is 13598668409. The reversal of 13598668403 is 30486689531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30486689531 = 103 ⋅295987277.

It is a cyclic number.

It is not a de Polignac number, because 13598668403 - 2¹⁶ = 13598602867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13598668409) 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, 76396925 + ... + 76397102.

It is an arithmetic number, because the mean of its divisors is an integer number (3437865630).

Almost surely, 2^13598668403 is an apocalyptic number.

13598668403 is a deficient number, since it is larger than the sum of its proper divisors (152794117).

13598668403 is an equidigital number, since it uses as much as digits as its factorization.

13598668403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152794116.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 13598668403 in words is "thirteen billion, five hundred ninety-eight million, six hundred sixty-eight thousand, four hundred three".