18060680556 has 36 divisors (see below), whose sum is σ = 45955741104. Its totient is φ = 5980356000.

The previous prime is 18060680483. The next prime is 18060680579. The reversal of 18060680556 is 65508606081.

18060680556 is a `hidden beast` number, since 18 + 0 + 6 + 0 + 6 + 80 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1655775 + ... + 1666646.

It is an arithmetic number, because the mean of its divisors is an integer number (1276548364).

Almost surely, 2^18060680556 is an apocalyptic number.

It is an amenable number.

18060680556 is an abundant number, since it is smaller than the sum of its proper divisors (27895060548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18060680556 is a wasteful number, since it uses less digits than its factorization.

18060680556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322582 (or 3322577 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

It can be divided in two parts, 180606 and 80556, that added together give a palindrome (261162).

The spelling of 18060680556 in words is "eighteen billion, sixty million, six hundred eighty thousand, five hundred fifty-six".