111996135389 has 2 divisors, whose sum is σ = 111996135390. Its totient is φ = 111996135388.

The previous prime is 111996135353. The next prime is 111996135413. The reversal of 111996135389 is 983531699111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61042102489 + 50954032900 = 247067^2 + 225730^2 .

It is a cyclic number.

It is not a de Polignac number, because 111996135389 - 2³⁶ = 43276658653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111996135319) 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 as a sum of consecutive naturals, namely, 55998067694 + 55998067695.

It is an arithmetic number, because the mean of its divisors is an integer number (55998067695).

Almost surely, 2^111996135389 is an apocalyptic number.

It is an amenable number.

111996135389 is a deficient number, since it is larger than the sum of its proper divisors (1).

111996135389 is an equidigital number, since it uses as much as digits as its factorization.

111996135389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 56.

The spelling of 111996135389 in words is "one hundred eleven billion, nine hundred ninety-six million, one hundred thirty-five thousand, three hundred eighty-nine".