264033689921 has 2 divisors, whose sum is σ = 264033689922. Its totient is φ = 264033689920.

The previous prime is 264033689873. The next prime is 264033689923. The reversal of 264033689921 is 129986330462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203320729921 + 60712960000 = 450911^2 + 246400^2 .

It is a cyclic number.

It is not a de Polignac number, because 264033689921 - 2³⁴ = 246853820737 is a prime.

Together with 264033689923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264033689923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132016844960 + 132016844961.

It is an arithmetic number, because the mean of its divisors is an integer number (132016844961).

Almost surely, 2^264033689921 is an apocalyptic number.

It is an amenable number.

264033689921 is a deficient number, since it is larger than the sum of its proper divisors (1).

264033689921 is an equidigital number, since it uses as much as digits as its factorization.

264033689921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 264033689921 in words is "two hundred sixty-four billion, thirty-three million, six hundred eighty-nine thousand, nine hundred twenty-one".