111798648019 has 2 divisors, whose sum is σ = 111798648020. Its totient is φ = 111798648018.

The previous prime is 111798647999. The next prime is 111798648023. The reversal of 111798648019 is 910846897111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111798648019 - 2³⁵ = 77438909651 is a prime.

It is a super-2 number, since 2×111798648019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111798648079) 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, 55899324009 + 55899324010.

It is an arithmetic number, because the mean of its divisors is an integer number (55899324010).

Almost surely, 2^111798648019 is an apocalyptic number.

111798648019 is a deficient number, since it is larger than the sum of its proper divisors (1).

111798648019 is an equidigital number, since it uses as much as digits as its factorization.

111798648019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 55.

The spelling of 111798648019 in words is "one hundred eleven billion, seven hundred ninety-eight million, six hundred forty-eight thousand, nineteen".