234656564621 has 2 divisors, whose sum is σ = 234656564622. Its totient is φ = 234656564620.

The previous prime is 234656564609. The next prime is 234656564647. The reversal of 234656564621 is 126465656432.

234656564621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134110496521 + 100546068100 = 366211^2 + 317090^2 .

It is a cyclic number.

It is not a de Polignac number, because 234656564621 - 2¹⁰ = 234656563597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 234656564621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234656564651) 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, 117328282310 + 117328282311.

It is an arithmetic number, because the mean of its divisors is an integer number (117328282311).

Almost surely, 2^234656564621 is an apocalyptic number.

It is an amenable number.

234656564621 is a deficient number, since it is larger than the sum of its proper divisors (1).

234656564621 is an equidigital number, since it uses as much as digits as its factorization.

234656564621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6220800, while the sum is 50.

The spelling of 234656564621 in words is "two hundred thirty-four billion, six hundred fifty-six million, five hundred sixty-four thousand, six hundred twenty-one".