20434255141 has 2 divisors, whose sum is σ = 20434255142. Its totient is φ = 20434255140.

The previous prime is 20434255111. The next prime is 20434255157. The reversal of 20434255141 is 14155243402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10267566241 + 10166688900 = 101329^2 + 100830^2 .

It is a cyclic number.

It is not a de Polignac number, because 20434255141 - 2²¹ = 20432157989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20434255111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10217127570 + 10217127571.

It is an arithmetic number, because the mean of its divisors is an integer number (10217127571).

Almost surely, 2^20434255141 is an apocalyptic number.

It is an amenable number.

20434255141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20434255141 is an equidigital number, since it uses as much as digits as its factorization.

20434255141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20434255141 its reverse (14155243402), we get a palindrome (34589498543).

The spelling of 20434255141 in words is "twenty billion, four hundred thirty-four million, two hundred fifty-five thousand, one hundred forty-one".