111367871987 has 2 divisors, whose sum is σ = 111367871988. Its totient is φ = 111367871986.

The previous prime is 111367871941. The next prime is 111367872013. The reversal of 111367871987 is 789178763111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111367871987 - 2¹⁰ = 111367870963 is a prime.

It is not a weakly prime, because it can be changed into another prime (111367871687) 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, 55683935993 + 55683935994.

It is an arithmetic number, because the mean of its divisors is an integer number (55683935994).

Almost surely, 2^111367871987 is an apocalyptic number.

111367871987 is a deficient number, since it is larger than the sum of its proper divisors (1).

111367871987 is an equidigital number, since it uses as much as digits as its factorization.

111367871987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 59.

The spelling of 111367871987 in words is "one hundred eleven billion, three hundred sixty-seven million, eight hundred seventy-one thousand, nine hundred eighty-seven".