20612420141 has 2 divisors, whose sum is σ = 20612420142. Its totient is φ = 20612420140.

The previous prime is 20612420107. The next prime is 20612420261. The reversal of 20612420141 is 14102421602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10313214916 + 10299205225 = 101554^2 + 101485^2 .

It is a cyclic number.

It is not a de Polignac number, because 20612420141 - 2¹⁸ = 20612157997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20612423141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10306210070 + 10306210071.

It is an arithmetic number, because the mean of its divisors is an integer number (10306210071).

Almost surely, 2^20612420141 is an apocalyptic number.

It is an amenable number.

20612420141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20612420141 is an equidigital number, since it uses as much as digits as its factorization.

20612420141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20612420141 its reverse (14102421602), we get a palindrome (34714841743).

The spelling of 20612420141 in words is "twenty billion, six hundred twelve million, four hundred twenty thousand, one hundred forty-one".