20426613325523 has 2 divisors, whose sum is σ = 20426613325524. Its totient is φ = 20426613325522.

The previous prime is 20426613325519. The next prime is 20426613325553. The reversal of 20426613325523 is 32552331662402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20426613325523 - 2² = 20426613325519 is a prime.

It is not a weakly prime, because it can be changed into another prime (20426613325553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10213306662761 + 10213306662762.

It is an arithmetic number, because the mean of its divisors is an integer number (10213306662762).

Almost surely, 2^{20426613325523} is an apocalyptic number.

20426613325523 is a deficient number, since it is larger than the sum of its proper divisors (1).

20426613325523 is an equidigital number, since it uses as much as digits as its factorization.

20426613325523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 44.

Adding to 20426613325523 its reverse (32552331662402), we get a palindrome (52978944987925).

The spelling of 20426613325523 in words is "twenty trillion, four hundred twenty-six billion, six hundred thirteen million, three hundred twenty-five thousand, five hundred twenty-three".