20242151717 has 2 divisors, whose sum is σ = 20242151718. Its totient is φ = 20242151716.

The previous prime is 20242151701. The next prime is 20242151767. The reversal of 20242151717 is 71715124202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15895914241 + 4346237476 = 126079^2 + 65926^2 .

It is a cyclic number.

It is not a de Polignac number, because 20242151717 - 2⁴ = 20242151701 is a prime.

It is a super-2 number, since 2×20242151717² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20242151767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121075858 + 10121075859.

It is an arithmetic number, because the mean of its divisors is an integer number (10121075859).

Almost surely, 2^20242151717 is an apocalyptic number.

It is an amenable number.

20242151717 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242151717 is an equidigital number, since it uses as much as digits as its factorization.

20242151717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 32.

Adding to 20242151717 its reverse (71715124202), we get a palindrome (91957275919).

The spelling of 20242151717 in words is "twenty billion, two hundred forty-two million, one hundred fifty-one thousand, seven hundred seventeen".