111289857947 has 2 divisors, whose sum is σ = 111289857948. Its totient is φ = 111289857946.

The previous prime is 111289857937. The next prime is 111289857983. The reversal of 111289857947 is 749758982111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111289857947 - 2²⁶ = 111222749083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111289857947.

It is not a weakly prime, because it can be changed into another prime (111289857907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55644928973 + 55644928974.

It is an arithmetic number, because the mean of its divisors is an integer number (55644928974).

Almost surely, 2^111289857947 is an apocalyptic number.

111289857947 is a deficient number, since it is larger than the sum of its proper divisors (1).

111289857947 is an equidigital number, since it uses as much as digits as its factorization.

111289857947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 62.

The spelling of 111289857947 in words is "one hundred eleven billion, two hundred eighty-nine million, eight hundred fifty-seven thousand, nine hundred forty-seven".