15969138793 has 2 divisors, whose sum is σ = 15969138794. Its totient is φ = 15969138792.

The previous prime is 15969138739. The next prime is 15969138797. The reversal of 15969138793 is 39783196951.

Together with previous prime (15969138739) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13939816489 + 2029322304 = 118067^2 + 45048^2 .

It is a cyclic number.

It is not a de Polignac number, because 15969138793 - 2¹⁷ = 15969007721 is a prime.

It is not a weakly prime, because it can be changed into another prime (15969138797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7984569396 + 7984569397.

It is an arithmetic number, because the mean of its divisors is an integer number (7984569397).

Almost surely, 2^15969138793 is an apocalyptic number.

It is an amenable number.

15969138793 is a deficient number, since it is larger than the sum of its proper divisors (1).

15969138793 is an equidigital number, since it uses as much as digits as its factorization.

15969138793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11022480, while the sum is 61.

The spelling of 15969138793 in words is "fifteen billion, nine hundred sixty-nine million, one hundred thirty-eight thousand, seven hundred ninety-three".