111017807780779 has 2 divisors, whose sum is σ = 111017807780780. Its totient is φ = 111017807780778.

The previous prime is 111017807780771. The next prime is 111017807780821. The reversal of 111017807780779 is 977087708710111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111017807780779 - 2³ = 111017807780771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111017807780779.

It is not a weakly prime, because it can be changed into another prime (111017807780771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55508903890389 + 55508903890390.

It is an arithmetic number, because the mean of its divisors is an integer number (55508903890390).

Almost surely, 2^{111017807780779} is an apocalyptic number.

111017807780779 is a deficient number, since it is larger than the sum of its proper divisors (1).

111017807780779 is an equidigital number, since it uses as much as digits as its factorization.

111017807780779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9680832, while the sum is 64.

The spelling of 111017807780779 in words is "one hundred eleven trillion, seventeen billion, eight hundred seven million, seven hundred eighty thousand, seven hundred seventy-nine".