18112605777 has 160 divisors (see below), whose sum is σ = 34123161600. Its totient is φ = 9346119552.

The previous prime is 18112605769. The next prime is 18112605781. The reversal of 18112605777 is 77750621181.

18112605777 is a `hidden beast` number, since 1 + 8 + 1 + 12 + 60 + 577 + 7 = 666.

It is not a de Polignac number, because 18112605777 - 2³ = 18112605769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18112605767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 17774374 + ... + 17775392.

It is an arithmetic number, because the mean of its divisors is an integer number (213269760).

Almost surely, 2^18112605777 is an apocalyptic number.

It is an amenable number.

18112605777 is a deficient number, since it is larger than the sum of its proper divisors (16010555823).

18112605777 is a wasteful number, since it uses less digits than its factorization.

18112605777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1128 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 45.

The spelling of 18112605777 in words is "eighteen billion, one hundred twelve million, six hundred five thousand, seven hundred seventy-seven".