20344331641357 has 2 divisors, whose sum is σ = 20344331641358. Its totient is φ = 20344331641356.

The previous prime is 20344331641331. The next prime is 20344331641369. The reversal of 20344331641357 is 75314613344302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12803271923556 + 7541059717801 = 3578166^2 + 2746099^2 .

It is a cyclic number.

It is not a de Polignac number, because 20344331641357 - 2⁷ = 20344331641229 is a prime.

It is a super-3 number, since 3×20344331641357³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20344331641957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172165820678 + 10172165820679.

It is an arithmetic number, because the mean of its divisors is an integer number (10172165820679).

Almost surely, 2^{20344331641357} is an apocalyptic number.

It is an amenable number.

20344331641357 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344331641357 is an equidigital number, since it uses as much as digits as its factorization.

20344331641357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 46.

Adding to 20344331641357 its reverse (75314613344302), we get a palindrome (95658944985659).

The spelling of 20344331641357 in words is "twenty trillion, three hundred forty-four billion, three hundred thirty-one million, six hundred forty-one thousand, three hundred fifty-seven".