13645023603 has 16 divisors (see below), whose sum is σ = 19153641600. Its totient is φ = 8616680640.

The previous prime is 13645023593. The next prime is 13645023619. The reversal of 13645023603 is 30632054631.

It is not a de Polignac number, because 13645023603 - 2¹³ = 13645015411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13645023673) 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, 549823 + ... + 574103.

It is an arithmetic number, because the mean of its divisors is an integer number (1197102600).

Almost surely, 2^13645023603 is an apocalyptic number.

13645023603 is a deficient number, since it is larger than the sum of its proper divisors (5508617997).

13645023603 is a wasteful number, since it uses less digits than its factorization.

13645023603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34162.

The product of its (nonzero) digits is 38880, while the sum is 33.

The spelling of 13645023603 in words is "thirteen billion, six hundred forty-five million, twenty-three thousand, six hundred three".