13040145505 has 16 divisors (see below), whose sum is σ = 16589528064. Its totient is φ = 9822738240.

The previous prime is 13040145473. The next prime is 13040145509. The reversal of 13040145505 is 50554104031.

It is not a de Polignac number, because 13040145505 - 2⁵ = 13040145473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13040145509) 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, 1131157 + ... + 1142626.

It is an arithmetic number, because the mean of its divisors is an integer number (1036845504).

Almost surely, 2^13040145505 is an apocalyptic number.

It is an amenable number.

13040145505 is a deficient number, since it is larger than the sum of its proper divisors (3549382559).

13040145505 is a wasteful number, since it uses less digits than its factorization.

13040145505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273856.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 13040145505 its reverse (50554104031), we get a palindrome (63594249536).

The spelling of 13040145505 in words is "thirteen billion, forty million, one hundred forty-five thousand, five hundred five".