24555050021 has 2 divisors, whose sum is σ = 24555050022. Its totient is φ = 24555050020.

The previous prime is 24555049999. The next prime is 24555050119. The reversal of 24555050021 is 12005055542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21989627521 + 2565422500 = 148289^2 + 50650^2 .

It is a cyclic number.

It is not a de Polignac number, because 24555050021 - 2²⁶ = 24487941157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24555050321) 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, 12277525010 + 12277525011.

It is an arithmetic number, because the mean of its divisors is an integer number (12277525011).

Almost surely, 2^24555050021 is an apocalyptic number.

It is an amenable number.

24555050021 is a deficient number, since it is larger than the sum of its proper divisors (1).

24555050021 is an equidigital number, since it uses as much as digits as its factorization.

24555050021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 24555050021 in words is "twenty-four billion, five hundred fifty-five million, fifty thousand, twenty-one".