20612311242629 has 2 divisors, whose sum is σ = 20612311242630. Its totient is φ = 20612311242628.

The previous prime is 20612311242623. The next prime is 20612311242661. The reversal of 20612311242629 is 92624211321602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16533535161025 + 4078776081604 = 4066145^2 + 2019598^2 .

It is a cyclic number.

It is not a de Polignac number, because 20612311242629 - 2²⁰ = 20612310194053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20612311242623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10306155621314 + 10306155621315.

It is an arithmetic number, because the mean of its divisors is an integer number (10306155621315).

Almost surely, 2^{20612311242629} is an apocalyptic number.

It is an amenable number.

20612311242629 is a deficient number, since it is larger than the sum of its proper divisors (1).

20612311242629 is an equidigital number, since it uses as much as digits as its factorization.

20612311242629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 20612311242629 in words is "twenty trillion, six hundred twelve billion, three hundred eleven million, two hundred forty-two thousand, six hundred twenty-nine".