21442433063 has 2 divisors, whose sum is σ = 21442433064. Its totient is φ = 21442433062.

The previous prime is 21442433041. The next prime is 21442433119. The reversal of 21442433063 is 36033424412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21442433063 is a prime.

It is a super-2 number, since 2×21442433063² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21442433003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721216531 + 10721216532.

It is an arithmetic number, because the mean of its divisors is an integer number (10721216532).

Almost surely, 2^21442433063 is an apocalyptic number.

21442433063 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442433063 is an equidigital number, since it uses as much as digits as its factorization.

21442433063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 21442433063 its reverse (36033424412), we get a palindrome (57475857475).

The spelling of 21442433063 in words is "twenty-one billion, four hundred forty-two million, four hundred thirty-three thousand, sixty-three".