13208661479 has 24 divisors (see below), whose sum is σ = 15204089040. Its totient is φ = 11404468224.

The previous prime is 13208661469. The next prime is 13208661517. The reversal of 13208661479 is 97416680231.

It is not a de Polignac number, because 13208661479 - 2⁸ = 13208661223 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 (13208661469) 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, 601607 + ... + 623175.

It is an arithmetic number, because the mean of its divisors is an integer number (633503710).

Almost surely, 2^13208661479 is an apocalyptic number.

13208661479 is a deficient number, since it is larger than the sum of its proper divisors (1995427561).

13208661479 is a wasteful number, since it uses less digits than its factorization.

13208661479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21779 (or 21762 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 13208661479 in words is "thirteen billion, two hundred eight million, six hundred sixty-one thousand, four hundred seventy-nine".