20003555412559 has 2 divisors, whose sum is σ = 20003555412560. Its totient is φ = 20003555412558.

The previous prime is 20003555412553. The next prime is 20003555412593. The reversal of 20003555412559 is 95521455530002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20003555412559 - 2²⁵ = 20003521858127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20003555412553) 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 as a sum of consecutive naturals, namely, 10001777706279 + 10001777706280.

It is an arithmetic number, because the mean of its divisors is an integer number (10001777706280).

Almost surely, 2^{20003555412559} is an apocalyptic number.

20003555412559 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003555412559 is an equidigital number, since it uses as much as digits as its factorization.

20003555412559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350000, while the sum is 46.

The spelling of 20003555412559 in words is "twenty trillion, three billion, five hundred fifty-five million, four hundred twelve thousand, five hundred fifty-nine".