13040421603 has 16 divisors (see below), whose sum is σ = 19000227456. Its totient is φ = 7889810240.

The previous prime is 13040421587. The next prime is 13040421607. The reversal of 13040421603 is 30612404031.

It is a cyclic number.

It is not a de Polignac number, because 13040421603 - 2⁴ = 13040421587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13040421607) 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, 317226 + ... + 355967.

It is an arithmetic number, because the mean of its divisors is an integer number (1187514216).

Almost surely, 2^13040421603 is an apocalyptic number.

13040421603 is a deficient number, since it is larger than the sum of its proper divisors (5959805853).

13040421603 is a wasteful number, since it uses less digits than its factorization.

13040421603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673794.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13040421603 its reverse (30612404031), we get a palindrome (43652825634).

The spelling of 13040421603 in words is "thirteen billion, forty million, four hundred twenty-one thousand, six hundred three".