111839720077 has 2 divisors, whose sum is σ = 111839720078. Its totient is φ = 111839720076.

The previous prime is 111839720063. The next prime is 111839720119. The reversal of 111839720077 is 770027938111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73968224841 + 37871495236 = 271971^2 + 194606^2 .

It is a cyclic number.

It is not a de Polignac number, because 111839720077 - 2⁷ = 111839719949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111839720977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55919860038 + 55919860039.

It is an arithmetic number, because the mean of its divisors is an integer number (55919860039).

Almost surely, 2^111839720077 is an apocalyptic number.

It is an amenable number.

111839720077 is a deficient number, since it is larger than the sum of its proper divisors (1).

111839720077 is an equidigital number, since it uses as much as digits as its factorization.

111839720077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 46.

The spelling of 111839720077 in words is "one hundred eleven billion, eight hundred thirty-nine million, seven hundred twenty thousand, seventy-seven".