20426121426323 has 2 divisors, whose sum is σ = 20426121426324. Its totient is φ = 20426121426322.

The previous prime is 20426121426311. The next prime is 20426121426343. The reversal of 20426121426323 is 32362412162402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20426121426323 - 2⁶ = 20426121426259 is a prime.

It is not a weakly prime, because it can be changed into another prime (20426121426343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10213060713161 + 10213060713162.

It is an arithmetic number, because the mean of its divisors is an integer number (10213060713162).

Almost surely, 2^{20426121426323} is an apocalyptic number.

20426121426323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20426121426323 is an equidigital number, since it uses as much as digits as its factorization.

20426121426323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 20426121426323 its reverse (32362412162402), we get a palindrome (52788533588725).

The spelling of 20426121426323 in words is "twenty trillion, four hundred twenty-six billion, one hundred twenty-one million, four hundred twenty-six thousand, three hundred twenty-three".