20344764205273 has 2 divisors, whose sum is σ = 20344764205274. Its totient is φ = 20344764205272.

The previous prime is 20344764205267. The next prime is 20344764205291. The reversal of 20344764205273 is 37250246744302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13787052200464 + 6557712004809 = 3713092^2 + 2560803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20344764205273 is a prime.

It is not a weakly prime, because it can be changed into another prime (20344764205243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172382102636 + 10172382102637.

It is an arithmetic number, because the mean of its divisors is an integer number (10172382102637).

Almost surely, 2^{20344764205273} is an apocalyptic number.

It is an amenable number.

20344764205273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344764205273 is an equidigital number, since it uses as much as digits as its factorization.

20344764205273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 49.

The spelling of 20344764205273 in words is "twenty trillion, three hundred forty-four billion, seven hundred sixty-four million, two hundred five thousand, two hundred seventy-three".