20244342247 has 2 divisors, whose sum is σ = 20244342248. Its totient is φ = 20244342246.

The previous prime is 20244342221. The next prime is 20244342257. The reversal of 20244342247 is 74224344202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20244342247 - 2⁷ = 20244342119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20244342257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10122171123 + 10122171124.

It is an arithmetic number, because the mean of its divisors is an integer number (10122171124).

Almost surely, 2^20244342247 is an apocalyptic number.

20244342247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20244342247 is an equidigital number, since it uses as much as digits as its factorization.

20244342247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 34.

Adding to 20244342247 its reverse (74224344202), we get a palindrome (94468686449).

The spelling of 20244342247 in words is "twenty billion, two hundred forty-four million, three hundred forty-two thousand, two hundred forty-seven".