13594819121 has 4 divisors (see below), whose sum is σ = 14640574452. Its totient is φ = 12549063792.

The previous prime is 13594819103. The next prime is 13594819157. The reversal of 13594819121 is 12191849531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3116430625 + 10478388496 = 55825^2 + 102364^2 .

It is a cyclic number.

It is not a de Polignac number, because 13594819121 - 2²⁶ = 13527710257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13594819171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522877646 + ... + 522877671.

It is an arithmetic number, because the mean of its divisors is an integer number (3660143613).

Almost surely, 2^13594819121 is an apocalyptic number.

It is an amenable number.

13594819121 is a deficient number, since it is larger than the sum of its proper divisors (1045755331).

13594819121 is a wasteful number, since it uses less digits than its factorization.

13594819121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045755330.

The product of its digits is 77760, while the sum is 44.

The spelling of 13594819121 in words is "thirteen billion, five hundred ninety-four million, eight hundred nineteen thousand, one hundred twenty-one".