20344517035693 has 2 divisors, whose sum is σ = 20344517035694. Its totient is φ = 20344517035692.

The previous prime is 20344517035669. The next prime is 20344517035763. The reversal of 20344517035693 is 39653071544302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20101036962724 + 243480072969 = 4483418^2 + 493437^2 .

It is a cyclic number.

It is not a de Polignac number, because 20344517035693 - 2⁹ = 20344517035181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20344517035693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20344517035603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172258517846 + 10172258517847.

It is an arithmetic number, because the mean of its divisors is an integer number (10172258517847).

Almost surely, 2^{20344517035693} is an apocalyptic number.

It is an amenable number.

20344517035693 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344517035693 is an equidigital number, since it uses as much as digits as its factorization.

20344517035693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 52.

Adding to 20344517035693 its reverse (39653071544302), we get a palindrome (59997588579995).

The spelling of 20344517035693 in words is "twenty trillion, three hundred forty-four billion, five hundred seventeen million, thirty-five thousand, six hundred ninety-three".