111739855977 has 6 divisors (see below), whose sum is σ = 161402014202. Its totient is φ = 74493237312.

The previous prime is 111739855967. The next prime is 111739856009. The reversal of 111739855977 is 779558937111.

111739855977 is a `hidden beast` number, since 1 + 1 + 1 + 7 + 3 + 9 + 8 + 559 + 77 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100879923456 + 10859932521 = 317616^2 + 104211^2 .

It is not a de Polignac number, because 111739855977 - 2¹⁰ = 111739854953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111739855967) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6207769768 + ... + 6207769785.

Almost surely, 2^111739855977 is an apocalyptic number.

It is an amenable number.

111739855977 is a deficient number, since it is larger than the sum of its proper divisors (49662158225).

111739855977 is a wasteful number, since it uses less digits than its factorization.

111739855977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12415539559 (or 12415539556 counting only the distinct ones).

The product of its digits is 16669800, while the sum is 63.

The spelling of 111739855977 in words is "one hundred eleven billion, seven hundred thirty-nine million, eight hundred fifty-five thousand, nine hundred seventy-seven".