21424882753 has 2 divisors, whose sum is σ = 21424882754. Its totient is φ = 21424882752.

The previous prime is 21424882747. The next prime is 21424882783. The reversal of 21424882753 is 35728842412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19528106049 + 1896776704 = 139743^2 + 43552^2 .

It is a cyclic number.

It is not a de Polignac number, because 21424882753 - 2¹³ = 21424874561 is a prime.

It is not a weakly prime, because it can be changed into another prime (21424882783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10712441376 + 10712441377.

It is an arithmetic number, because the mean of its divisors is an integer number (10712441377).

Almost surely, 2^21424882753 is an apocalyptic number.

It is an amenable number.

21424882753 is a deficient number, since it is larger than the sum of its proper divisors (1).

21424882753 is an equidigital number, since it uses as much as digits as its factorization.

21424882753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 860160, while the sum is 46.

The spelling of 21424882753 in words is "twenty-one billion, four hundred twenty-four million, eight hundred eighty-two thousand, seven hundred fifty-three".