13909255575479 has 16 divisors (see below), whose sum is σ = 15633738473760. Its totient is φ = 12266801564160.

The previous prime is 13909255575473. The next prime is 13909255575491. The reversal of 13909255575479 is 97457555290931.

It is a de Polignac number, because none of the positive numbers 2^k-13909255575479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13909255575473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133982222 + ... + 134085995.

It is an arithmetic number, because the mean of its divisors is an integer number (977108654610).

Almost surely, 2^{13909255575479} is an apocalyptic number.

13909255575479 is a deficient number, since it is larger than the sum of its proper divisors (1724482898281).

13909255575479 is a wasteful number, since it uses less digits than its factorization.

13909255575479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268068370.

The product of its (nonzero) digits is 535815000, while the sum is 71.

The spelling of 13909255575479 in words is "thirteen trillion, nine hundred nine billion, two hundred fifty-five million, five hundred seventy-five thousand, four hundred seventy-nine".