20003555414693 has 2 divisors, whose sum is σ = 20003555414694. Its totient is φ = 20003555414692.

The previous prime is 20003555414683. The next prime is 20003555414753. The reversal of 20003555414693 is 39641455530002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14264354205124 + 5739201209569 = 3776818^2 + 2395663^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003555414693 - 2³⁰ = 20002481672869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20003555414683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001777707346 + 10001777707347.

It is an arithmetic number, because the mean of its divisors is an integer number (10001777707347).

Almost surely, 2^{20003555414693} is an apocalyptic number.

It is an amenable number.

20003555414693 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003555414693 is an equidigital number, since it uses as much as digits as its factorization.

20003555414693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 20003555414693 in words is "twenty trillion, three billion, five hundred fifty-five million, four hundred fourteen thousand, six hundred ninety-three".