20126334254129 has 2 divisors, whose sum is σ = 20126334254130. Its totient is φ = 20126334254128.

The previous prime is 20126334254119. The next prime is 20126334254137. The reversal of 20126334254129 is 92145243362102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15506843764129 + 4619490490000 = 3937873^2 + 2149300^2 .

It is a cyclic number.

It is not a de Polignac number, because 20126334254129 - 2⁸ = 20126334253873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20126334254129.

It is not a weakly prime, because it can be changed into another prime (20126334254119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10063167127064 + 10063167127065.

It is an arithmetic number, because the mean of its divisors is an integer number (10063167127065).

Almost surely, 2^{20126334254129} is an apocalyptic number.

It is an amenable number.

20126334254129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20126334254129 is an equidigital number, since it uses as much as digits as its factorization.

20126334254129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 20126334254129 in words is "twenty trillion, one hundred twenty-six billion, three hundred thirty-four million, two hundred fifty-four thousand, one hundred twenty-nine".