18446656032 has 108 divisors (see below), whose sum is σ = 61022243646. Its totient is φ = 5270469120.

The previous prime is 18446656013. The next prime is 18446656049. The reversal of 18446656032 is 23065664481.

18446656032 is a `hidden beast` number, since 1 + 84 + 4 + 6 + 6 + 560 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17815842576 + 630813456 = 133476^2 + 25116^2 .

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 17 ways as a sum of consecutive naturals, for example, 639469 + ... + 667692.

Almost surely, 2^18446656032 is an apocalyptic number.

18446656032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18446656032 is an abundant number, since it is smaller than the sum of its proper divisors (42575587614).

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

18446656032 is a wasteful number, since it uses less digits than its factorization.

18446656032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307191 (or 1307173 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 18446656032 in words is "eighteen billion, four hundred forty-six million, six hundred fifty-six thousand, thirty-two".