20832354171949 has 2 divisors, whose sum is σ = 20832354171950. Its totient is φ = 20832354171948.

The previous prime is 20832354171913. The next prime is 20832354171971. The reversal of 20832354171949 is 94917145323802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19363124126025 + 1469230045924 = 4400355^2 + 1212118^2 .

It is a cyclic number.

It is not a de Polignac number, because 20832354171949 - 2²¹ = 20832352074797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20832354171893 and 20832354171902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20832354171989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10416177085974 + 10416177085975.

It is an arithmetic number, because the mean of its divisors is an integer number (10416177085975).

Almost surely, 2^{20832354171949} is an apocalyptic number.

It is an amenable number.

20832354171949 is a deficient number, since it is larger than the sum of its proper divisors (1).

20832354171949 is an equidigital number, since it uses as much as digits as its factorization.

20832354171949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 20832354171949 in words is "twenty trillion, eight hundred thirty-two billion, three hundred fifty-four million, one hundred seventy-one thousand, nine hundred forty-nine".