21626583813203 has 2 divisors, whose sum is σ = 21626583813204. Its totient is φ = 21626583813202.

The previous prime is 21626583813193. The next prime is 21626583813281. The reversal of 21626583813203 is 30231838562612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21626583813203 - 2¹⁶ = 21626583747667 is a prime.

It is not a weakly prime, because it can be changed into another prime (21626583813283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10813291906601 + 10813291906602.

It is an arithmetic number, because the mean of its divisors is an integer number (10813291906602).

Almost surely, 2^{21626583813203} is an apocalyptic number.

21626583813203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21626583813203 is an equidigital number, since it uses as much as digits as its factorization.

21626583813203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 21626583813203 in words is "twenty-one trillion, six hundred twenty-six billion, five hundred eighty-three million, eight hundred thirteen thousand, two hundred three".