20126252239879 has 2 divisors, whose sum is σ = 20126252239880. Its totient is φ = 20126252239878.

The previous prime is 20126252239859. The next prime is 20126252239957. The reversal of 20126252239879 is 97893225262102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20126252239879 - 2²⁷ = 20126118022151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20126252239859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10063126119939 + 10063126119940.

It is an arithmetic number, because the mean of its divisors is an integer number (10063126119940).

Almost surely, 2^{20126252239879} is an apocalyptic number.

20126252239879 is a deficient number, since it is larger than the sum of its proper divisors (1).

20126252239879 is an equidigital number, since it uses as much as digits as its factorization.

20126252239879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 20126252239879 in words is "twenty trillion, one hundred twenty-six billion, two hundred fifty-two million, two hundred thirty-nine thousand, eight hundred seventy-nine".