18480786666 has 16 divisors (see below), whose sum is σ = 39135783744. Its totient is φ = 5797893824.

The previous prime is 18480786659. The next prime is 18480786749. The reversal of 18480786666 is 66668708481.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 90591990 + ... + 90592193.

It is an arithmetic number, because the mean of its divisors is an integer number (2445986484).

Almost surely, 2^18480786666 is an apocalyptic number.

18480786666 is an abundant number, since it is smaller than the sum of its proper divisors (20654997078).

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

18480786666 is a wasteful number, since it uses less digits than its factorization.

18480786666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181184205.

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 18480786666 in words is "eighteen billion, four hundred eighty million, seven hundred eighty-six thousand, six hundred sixty-six".