13119919681565 has 16 divisors (see below), whose sum is σ = 15756037832640. Its totient is φ = 10487849137920.

The previous prime is 13119919681559. The next prime is 13119919681571. The reversal of 13119919681565 is 56518691991131.

It is an interprime number because it is at equal distance from previous prime (13119919681559) and next prime (13119919681571).

It is not a de Polignac number, because 13119919681565 - 2¹⁰ = 13119919680541 is a prime.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

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, 36996866 + ... + 37349804.

It is an arithmetic number, because the mean of its divisors is an integer number (984752364540).

Almost surely, 2^{13119919681565} is an apocalyptic number.

It is an amenable number.

13119919681565 is a deficient number, since it is larger than the sum of its proper divisors (2636118151075).

13119919681565 is a wasteful number, since it uses less digits than its factorization.

13119919681565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358652.

The product of its digits is 15746400, while the sum is 65.

The spelling of 13119919681565 in words is "thirteen trillion, one hundred nineteen billion, nine hundred nineteen million, six hundred eighty-one thousand, five hundred sixty-five".