20234511853 has 2 divisors, whose sum is σ = 20234511854. Its totient is φ = 20234511852.

The previous prime is 20234511841. The next prime is 20234511877. The reversal of 20234511853 is 35811543202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20062456164 + 172055689 = 141642^2 + 13117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20234511853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20234511883) 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, 10117255926 + 10117255927.

It is an arithmetic number, because the mean of its divisors is an integer number (10117255927).

Almost surely, 2^20234511853 is an apocalyptic number.

It is an amenable number.

20234511853 is a deficient number, since it is larger than the sum of its proper divisors (1).

20234511853 is an equidigital number, since it uses as much as digits as its factorization.

20234511853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 20234511853 in words is "twenty billion, two hundred thirty-four million, five hundred eleven thousand, eight hundred fifty-three".