18656681114 has 16 divisors (see below), whose sum is σ = 28584517248. Its totient is φ = 9128565312.

The previous prime is 18656681083. The next prime is 18656681119. The reversal of 18656681114 is 41118665681.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (18656681119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218434 + ... + 1233650.

It is an arithmetic number, because the mean of its divisors is an integer number (1786532328).

Almost surely, 2^18656681114 is an apocalyptic number.

18656681114 is a deficient number, since it is larger than the sum of its proper divisors (9927836134).

18656681114 is a wasteful number, since it uses less digits than its factorization.

18656681114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28309.

The product of its digits is 276480, while the sum is 47.

The spelling of 18656681114 in words is "eighteen billion, six hundred fifty-six million, six hundred eighty-one thousand, one hundred fourteen".