20343252511 has 2 divisors, whose sum is σ = 20343252512. Its totient is φ = 20343252510.

The previous prime is 20343252491. The next prime is 20343252529. The reversal of 20343252511 is 11525234302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20343252511 - 2¹⁷ = 20343121439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20343252511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20343252211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171626255 + 10171626256.

It is an arithmetic number, because the mean of its divisors is an integer number (10171626256).

Almost surely, 2^20343252511 is an apocalyptic number.

20343252511 is a deficient number, since it is larger than the sum of its proper divisors (1).

20343252511 is an equidigital number, since it uses as much as digits as its factorization.

20343252511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 20343252511 its reverse (11525234302), we get a palindrome (31868486813).

The spelling of 20343252511 in words is "twenty billion, three hundred forty-three million, two hundred fifty-two thousand, five hundred eleven".