20003555412593 has 2 divisors, whose sum is σ = 20003555412594. Its totient is φ = 20003555412592.

The previous prime is 20003555412559. The next prime is 20003555412691. The reversal of 20003555412593 is 39521455530002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17817111145024 + 2186444267569 = 4221032^2 + 1478663^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003555412593 - 2³⁶ = 19934835935857 is a prime.

It is not a weakly prime, because it can be changed into another prime (20003555412553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001777706296 + 10001777706297.

It is an arithmetic number, because the mean of its divisors is an integer number (10001777706297).

Almost surely, 2^{20003555412593} is an apocalyptic number.

It is an amenable number.

20003555412593 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003555412593 is an equidigital number, since it uses as much as digits as its factorization.

20003555412593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 20003555412593 in words is "twenty trillion, three billion, five hundred fifty-five million, four hundred twelve thousand, five hundred ninety-three".