20434422293 has 2 divisors, whose sum is σ = 20434422294. Its totient is φ = 20434422292.

The previous prime is 20434422287. The next prime is 20434422311. The reversal of 20434422293 is 39222443402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10907295844 + 9527126449 = 104438^2 + 97607^2 .

It is a cyclic number.

It is not a de Polignac number, because 20434422293 - 2⁴ = 20434422277 is a prime.

It is a super-2 number, since 2×20434422293² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20434422893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10217211146 + 10217211147.

It is an arithmetic number, because the mean of its divisors is an integer number (10217211147).

Almost surely, 2^20434422293 is an apocalyptic number.

It is an amenable number.

20434422293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20434422293 is an equidigital number, since it uses as much as digits as its factorization.

20434422293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 20434422293 its reverse (39222443402), we get a palindrome (59656865695).

The spelling of 20434422293 in words is "twenty billion, four hundred thirty-four million, four hundred twenty-two thousand, two hundred ninety-three".