20999182648583 has 2 divisors, whose sum is σ = 20999182648584. Its totient is φ = 20999182648582.

The previous prime is 20999182648547. The next prime is 20999182648603. The reversal of 20999182648583 is 38584628199902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20999182648583 - 2²⁶ = 20999115539719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20999182648583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20999182648183) 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, 10499591324291 + 10499591324292.

It is an arithmetic number, because the mean of its divisors is an integer number (10499591324292).

Almost surely, 2^{20999182648583} is an apocalyptic number.

20999182648583 is a deficient number, since it is larger than the sum of its proper divisors (1).

20999182648583 is an equidigital number, since it uses as much as digits as its factorization.

20999182648583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537477120, while the sum is 74.

The spelling of 20999182648583 in words is "twenty trillion, nine hundred ninety-nine billion, one hundred eighty-two million, six hundred forty-eight thousand, five hundred eighty-three".