13489430505 has 16 divisors (see below), whose sum is σ = 21936911424. Its totient is φ = 7076422080.

The previous prime is 13489430443. The next prime is 13489430531. The reversal of 13489430505 is 50503498431.

It is not a de Polignac number, because 13489430505 - 2⁶ = 13489430441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7370359 + ... + 7372188.

It is an arithmetic number, because the mean of its divisors is an integer number (1371056964).

Almost surely, 2^13489430505 is an apocalyptic number.

13489430505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13489430505 is a deficient number, since it is larger than the sum of its proper divisors (8447480919).

13489430505 is a wasteful number, since it uses less digits than its factorization.

13489430505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14742616.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 13489430505 in words is "thirteen billion, four hundred eighty-nine million, four hundred thirty thousand, five hundred five".