20002218903959 has 2 divisors, whose sum is σ = 20002218903960. Its totient is φ = 20002218903958.

The previous prime is 20002218903917. The next prime is 20002218903991. The reversal of 20002218903959 is 95930981220002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002218903959 is a prime.

It is a super-2 number, since 2×20002218903959² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002218903259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001109451979 + 10001109451980.

It is an arithmetic number, because the mean of its divisors is an integer number (10001109451980).

Almost surely, 2^{20002218903959} is an apocalyptic number.

20002218903959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002218903959 is an equidigital number, since it uses as much as digits as its factorization.

20002218903959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 20002218903959 in words is "twenty trillion, two billion, two hundred eighteen million, nine hundred three thousand, nine hundred fifty-nine".