18520350020037 has 8 divisors (see below), whose sum is σ = 27437555585280. Its totient is φ = 12346900013340.

The previous prime is 18520350019991. The next prime is 18520350020063. The reversal of 18520350020037 is 73002005302581.

It is a happy number.

18520350020037 is a `hidden beast` number, since 1 + 85 + 20 + 3 + 500 + 20 + 0 + 37 = 666.

It is not a de Polignac number, because 18520350020037 - 2⁶ = 18520350019973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18520350019983 and 18520350020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18520350010037) 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 7 ways as a sum of consecutive naturals, for example, 342969444789 + ... + 342969444842.

It is an arithmetic number, because the mean of its divisors is an integer number (3429694448160).

Almost surely, 2^{18520350020037} is an apocalyptic number.

It is an amenable number.

18520350020037 is a deficient number, since it is larger than the sum of its proper divisors (8917205565243).

18520350020037 is an equidigital number, since it uses as much as digits as its factorization.

18520350020037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685938889640 (or 685938889634 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 18520350020037 in words is "eighteen trillion, five hundred twenty billion, three hundred fifty million, twenty thousand, thirty-seven".