20552166923 has 2 divisors, whose sum is σ = 20552166924. Its totient is φ = 20552166922.

The previous prime is 20552166917. The next prime is 20552167021. The reversal of 20552166923 is 32966125502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20552166923 - 2¹⁶ = 20552101387 is a prime.

It is not a weakly prime, because it can be changed into another prime (20552166913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10276083461 + 10276083462.

It is an arithmetic number, because the mean of its divisors is an integer number (10276083462).

Almost surely, 2^20552166923 is an apocalyptic number.

20552166923 is a deficient number, since it is larger than the sum of its proper divisors (1).

20552166923 is an equidigital number, since it uses as much as digits as its factorization.

20552166923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 20552166923 in words is "twenty billion, five hundred fifty-two million, one hundred sixty-six thousand, nine hundred twenty-three".