18366612480 has 132 divisors (see below), whose sum is σ = 63639993612. Its totient is φ = 4897751040.

The previous prime is 18366612461. The next prime is 18366612497. The reversal of 18366612480 is 8421666381.

It can be written as a sum of positive squares in 2 ways, for example, as 13694616576 + 4671995904 = 117024^2 + 68352^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153211 + ... + 245370.

Almost surely, 2^18366612480 is an apocalyptic number.

18366612480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18366612480 is an abundant number, since it is smaller than the sum of its proper divisors (45273381132).

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

18366612480 is a wasteful number, since it uses less digits than its factorization.

18366612480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398612 (or 398591 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 18366612480 in words is "eighteen billion, three hundred sixty-six million, six hundred twelve thousand, four hundred eighty".