18720476001763 has 4 divisors (see below), whose sum is σ = 18746226313360. Its totient is φ = 18694725690168.

The previous prime is 18720476001727. The next prime is 18720476001791. The reversal of 18720476001763 is 36710067402781.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18720476001763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18720476001763.

It is not an unprimeable number, because it can be changed into a prime (18720476001463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12875154708 + ... + 12875156161.

It is an arithmetic number, because the mean of its divisors is an integer number (4686556578340).

Almost surely, 2^{18720476001763} is an apocalyptic number.

18720476001763 is a deficient number, since it is larger than the sum of its proper divisors (25750311597).

18720476001763 is an equidigital number, since it uses as much as digits as its factorization.

18720476001763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25750311596.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 18720476001763 in words is "eighteen trillion, seven hundred twenty billion, four hundred seventy-six million, one thousand, seven hundred sixty-three".