111551115079 has 2 divisors, whose sum is σ = 111551115080. Its totient is φ = 111551115078.

The previous prime is 111551115041. The next prime is 111551115089. The reversal of 111551115079 is 970511155111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111551115079 - 2¹⁹ = 111550590791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111551115029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55775557539 + 55775557540.

It is an arithmetic number, because the mean of its divisors is an integer number (55775557540).

Almost surely, 2^111551115079 is an apocalyptic number.

111551115079 is a deficient number, since it is larger than the sum of its proper divisors (1).

111551115079 is an equidigital number, since it uses as much as digits as its factorization.

111551115079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7875, while the sum is 37.

The spelling of 111551115079 in words is "one hundred eleven billion, five hundred fifty-one million, one hundred fifteen thousand, seventy-nine".