13506345279 has 24 divisors (see below), whose sum is σ = 22814709632. Its totient is φ = 7538423760.

The previous prime is 13506345271. The next prime is 13506345299. The reversal of 13506345279 is 97254360531.

13506345279 is a `hidden beast` number, since 1 + 3 + 5 + 0 + 634 + 5 + 2 + 7 + 9 = 666.

It is not a de Polignac number, because 13506345279 - 2³ = 13506345271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13506345271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2490157 + ... + 2495574.

Almost surely, 2^13506345279 is an apocalyptic number.

13506345279 is a deficient number, since it is larger than the sum of its proper divisors (9308364353).

13506345279 is a wasteful number, since it uses less digits than its factorization.

13506345279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4985787 (or 4985784 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 13506345279 in words is "thirteen billion, five hundred six million, three hundred forty-five thousand, two hundred seventy-nine".