20075605553 has 2 divisors, whose sum is σ = 20075605554. Its totient is φ = 20075605552.

The previous prime is 20075605513. The next prime is 20075605567. The reversal of 20075605553 is 35550657002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13221090289 + 6854515264 = 114983^2 + 82792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20075605553 is a prime.

It is not a weakly prime, because it can be changed into another prime (20075605513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10037802776 + 10037802777.

It is an arithmetic number, because the mean of its divisors is an integer number (10037802777).

Almost surely, 2^20075605553 is an apocalyptic number.

It is an amenable number.

20075605553 is a deficient number, since it is larger than the sum of its proper divisors (1).

20075605553 is an equidigital number, since it uses as much as digits as its factorization.

20075605553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157500, while the sum is 38.

The spelling of 20075605553 in words is "twenty billion, seventy-five million, six hundred five thousand, five hundred fifty-three".