21200551452583 has 2 divisors, whose sum is σ = 21200551452584. Its totient is φ = 21200551452582.

The previous prime is 21200551452541. The next prime is 21200551452607. The reversal of 21200551452583 is 38525415500212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21200551452583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200551452383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600275726291 + 10600275726292.

It is an arithmetic number, because the mean of its divisors is an integer number (10600275726292).

Almost surely, 2^{21200551452583} is an apocalyptic number.

21200551452583 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200551452583 is an equidigital number, since it uses as much as digits as its factorization.

21200551452583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480000, while the sum is 43.

Adding to 21200551452583 its reverse (38525415500212), we get a palindrome (59725966952795).

The spelling of 21200551452583 in words is "twenty-one trillion, two hundred billion, five hundred fifty-one million, four hundred fifty-two thousand, five hundred eighty-three".