20442336503 has 2 divisors, whose sum is σ = 20442336504. Its totient is φ = 20442336502.

The previous prime is 20442336457. The next prime is 20442336517. The reversal of 20442336503 is 30563324402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20442336503 - 2¹⁶ = 20442270967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20442336503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20442336533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221168251 + 10221168252.

It is an arithmetic number, because the mean of its divisors is an integer number (10221168252).

Almost surely, 2^20442336503 is an apocalyptic number.

20442336503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20442336503 is an equidigital number, since it uses as much as digits as its factorization.

20442336503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 32.

The spelling of 20442336503 in words is "twenty billion, four hundred forty-two million, three hundred thirty-six thousand, five hundred three".