18066336576 has 28 divisors (see below), whose sum is σ = 47800516032. Its totient is φ = 6022112128.

The previous prime is 18066336551. The next prime is 18066336583. The reversal of 18066336576 is 67563366081.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47047560 + ... + 47047943.

Almost surely, 2^18066336576 is an apocalyptic number.

18066336576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18066336576 is an abundant number, since it is smaller than the sum of its proper divisors (29734179456).

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

18066336576 is an equidigital number, since it uses as much as digits as its factorization.

18066336576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94095518 (or 94095508 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 18066336576 in words is "eighteen billion, sixty-six million, three hundred thirty-six thousand, five hundred seventy-six".