11115555079 has 2 divisors, whose sum is σ = 11115555080. Its totient is φ = 11115555078.

The previous prime is 11115555019. The next prime is 11115555089. The reversal of 11115555079 is 97055551111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11115555079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11115555019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557777539 + 5557777540.

It is an arithmetic number, because the mean of its divisors is an integer number (5557777540).

Almost surely, 2^11115555079 is an apocalyptic number.

11115555079 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115555079 is an equidigital number, since it uses as much as digits as its factorization.

11115555079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39375, while the sum is 40.

The spelling of 11115555079 in words is "eleven billion, one hundred fifteen million, five hundred fifty-five thousand, seventy-nine".