111020977549 has 2 divisors, whose sum is σ = 111020977550. Its totient is φ = 111020977548.

The previous prime is 111020977477. The next prime is 111020977553. The reversal of 111020977549 is 945779020111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90258184900 + 20762792649 = 300430^2 + 144093^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020977549 - 2³¹ = 108873493901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111020977499 and 111020977508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111020977589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510488774 + 55510488775.

It is an arithmetic number, because the mean of its divisors is an integer number (55510488775).

Almost surely, 2^111020977549 is an apocalyptic number.

It is an amenable number.

111020977549 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020977549 is an equidigital number, since it uses as much as digits as its factorization.

111020977549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 46.

The spelling of 111020977549 in words is "one hundred eleven billion, twenty million, nine hundred seventy-seven thousand, five hundred forty-nine".