20955827723 has 2 divisors, whose sum is σ = 20955827724. Its totient is φ = 20955827722.

The previous prime is 20955827701. The next prime is 20955827731. The reversal of 20955827723 is 32772855902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20955827723 - 2²⁶ = 20888718859 is a prime.

It is not a weakly prime, because it can be changed into another prime (20955827923) 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, 10477913861 + 10477913862.

It is an arithmetic number, because the mean of its divisors is an integer number (10477913862).

Almost surely, 2^20955827723 is an apocalyptic number.

20955827723 is a deficient number, since it is larger than the sum of its proper divisors (1).

20955827723 is an equidigital number, since it uses as much as digits as its factorization.

20955827723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 20955827723 in words is "twenty billion, nine hundred fifty-five million, eight hundred twenty-seven thousand, seven hundred twenty-three".