180399783996 has 18 divisors (see below), whose sum is σ = 456010565192. Its totient is φ = 60133261320.

The previous prime is 180399783947. The next prime is 180399784007. The reversal of 180399783996 is 699387993081.

It is a happy number.

180399783996 is a `hidden beast` number, since 1 + 80 + 3 + 99 + 78 + 399 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2505552520 + ... + 2505552591.

Almost surely, 2^180399783996 is an apocalyptic number.

It is an amenable number.

180399783996 is an abundant number, since it is smaller than the sum of its proper divisors (275610781196).

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

180399783996 is a wasteful number, since it uses less digits than its factorization.

180399783996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011105121 (or 5011105116 counting only the distinct ones).

The product of its (nonzero) digits is 158723712, while the sum is 72.

The spelling of 180399783996 in words is "one hundred eighty billion, three hundred ninety-nine million, seven hundred eighty-three thousand, nine hundred ninety-six".