20412242351 has 2 divisors, whose sum is σ = 20412242352. Its totient is φ = 20412242350.

The previous prime is 20412242339. The next prime is 20412242353. The reversal of 20412242351 is 15324221402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20412242351 is a prime.

Together with 20412242353, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20412242351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20412242353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206121175 + 10206121176.

It is an arithmetic number, because the mean of its divisors is an integer number (10206121176).

Almost surely, 2^20412242351 is an apocalyptic number.

20412242351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412242351 is an equidigital number, since it uses as much as digits as its factorization.

20412242351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20412242351 its reverse (15324221402), we get a palindrome (35736463753).

The spelling of 20412242351 in words is "twenty billion, four hundred twelve million, two hundred forty-two thousand, three hundred fifty-one".