180616803993 has 32 divisors (see below), whose sum is σ = 274108805120. Its totient is φ = 117504535680.

The previous prime is 180616803989. The next prime is 180616804051. The reversal of 180616803993 is 399308616081.

180616803993 is a `hidden beast` number, since 18 + 0 + 616 + 8 + 0 + 3 + 9 + 9 + 3 = 666.

180616803993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 180616803993 - 2² = 180616803989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180616803953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222580 + ... + 640917.

It is an arithmetic number, because the mean of its divisors is an integer number (8565900160).

Almost surely, 2^180616803993 is an apocalyptic number.

It is an amenable number.

180616803993 is a deficient number, since it is larger than the sum of its proper divisors (93492001127).

180616803993 is a wasteful number, since it uses less digits than its factorization.

180616803993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863694 (or 863688 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 180616803993 in words is "one hundred eighty billion, six hundred sixteen million, eight hundred three thousand, nine hundred ninety-three".