13040020435 has 64 divisors (see below), whose sum is σ = 18044611200. Its totient is φ = 8966909952.

The previous prime is 13040020423. The next prime is 13040020463. The reversal of 13040020435 is 53402004031.

It is not a de Polignac number, because 13040020435 - 2²⁵ = 13006466003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21134247 + ... + 21134863.

It is an arithmetic number, because the mean of its divisors is an integer number (281947050).

Almost surely, 2^13040020435 is an apocalyptic number.

13040020435 is a deficient number, since it is larger than the sum of its proper divisors (5004590765).

13040020435 is a wasteful number, since it uses less digits than its factorization.

13040020435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 13040020435 its reverse (53402004031), we get a palindrome (66442024466).

The spelling of 13040020435 in words is "thirteen billion, forty million, twenty thousand, four hundred thirty-five".