20006426441 has 2 divisors, whose sum is σ = 20006426442. Its totient is φ = 20006426440.

The previous prime is 20006426381. The next prime is 20006426477. The reversal of 20006426441 is 14462460002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17699641600 + 2306784841 = 133040^2 + 48029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20006426441 is a prime.

It is not a weakly prime, because it can be changed into another prime (20006426641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10003213220 + 10003213221.

It is an arithmetic number, because the mean of its divisors is an integer number (10003213221).

Almost surely, 2^20006426441 is an apocalyptic number.

It is an amenable number.

20006426441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20006426441 is an equidigital number, since it uses as much as digits as its factorization.

20006426441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 20006426441 its reverse (14462460002), we get a palindrome (34468886443).

The spelling of 20006426441 in words is "twenty billion, six million, four hundred twenty-six thousand, four hundred forty-one".