20053637573 has 2 divisors, whose sum is σ = 20053637574. Its totient is φ = 20053637572.

The previous prime is 20053637543. The next prime is 20053637599. The reversal of 20053637573 is 37573635002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17566321444 + 2487316129 = 132538^2 + 49873^2 .

It is a cyclic number.

It is not a de Polignac number, because 20053637573 - 2¹⁶ = 20053572037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20053637573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20053637543) 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, 10026818786 + 10026818787.

It is an arithmetic number, because the mean of its divisors is an integer number (10026818787).

Almost surely, 2^20053637573 is an apocalyptic number.

It is an amenable number.

20053637573 is a deficient number, since it is larger than the sum of its proper divisors (1).

20053637573 is an equidigital number, since it uses as much as digits as its factorization.

20053637573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 41.

The spelling of 20053637573 in words is "twenty billion, fifty-three million, six hundred thirty-seven thousand, five hundred seventy-three".