111020977589 has 2 divisors, whose sum is σ = 111020977590. Its totient is φ = 111020977588.

The previous prime is 111020977553. The next prime is 111020977609. The reversal of 111020977589 is 985779020111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110634068689 + 386908900 = 332617^2 + 19670^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020977589 - 2¹⁶ = 111020912053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111020977549) 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, 55510488794 + 55510488795.

It is an arithmetic number, because the mean of its divisors is an integer number (55510488795).

Almost surely, 2^111020977589 is an apocalyptic number.

It is an amenable number.

111020977589 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020977589 is an equidigital number, since it uses as much as digits as its factorization.

111020977589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 50.

The spelling of 111020977589 in words is "one hundred eleven billion, twenty million, nine hundred seventy-seven thousand, five hundred eighty-nine".