20003908463663 has 4 divisors (see below), whose sum is σ = 20005615730520. Its totient is φ = 20002201196808.

The previous prime is 20003908463647. The next prime is 20003908463689. The reversal of 20003908463663 is 36636480930002.

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

It is a cyclic number.

It is not a de Polignac number, because 20003908463663 - 2⁴ = 20003908463647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003908460663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853615853 + ... + 853639286.

It is an arithmetic number, because the mean of its divisors is an integer number (5001403932630).

Almost surely, 2^{20003908463663} is an apocalyptic number.

20003908463663 is a deficient number, since it is larger than the sum of its proper divisors (1707266857).

20003908463663 is a wasteful number, since it uses less digits than its factorization.

20003908463663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707266856.

The product of its (nonzero) digits is 3359232, while the sum is 50.

The spelling of 20003908463663 in words is "twenty trillion, three billion, nine hundred eight million, four hundred sixty-three thousand, six hundred sixty-three".