20740104293 has 2 divisors, whose sum is σ = 20740104294. Its totient is φ = 20740104292.

The previous prime is 20740104257. The next prime is 20740104299. The reversal of 20740104293 is 39240104702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17016419809 + 3723684484 = 130447^2 + 61022^2 .

It is a cyclic number.

It is not a de Polignac number, because 20740104293 - 2¹² = 20740100197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20740104299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10370052146 + 10370052147.

It is an arithmetic number, because the mean of its divisors is an integer number (10370052147).

Almost surely, 2^20740104293 is an apocalyptic number.

It is an amenable number.

20740104293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20740104293 is an equidigital number, since it uses as much as digits as its factorization.

20740104293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 20740104293 its reverse (39240104702), we get a palindrome (59980208995).

The spelling of 20740104293 in words is "twenty billion, seven hundred forty million, one hundred four thousand, two hundred ninety-three".