264334365632021 has 2 divisors, whose sum is σ = 264334365632022. Its totient is φ = 264334365632020.

The previous prime is 264334365632003. The next prime is 264334365632027. The reversal of 264334365632021 is 120236563433462.

264334365632021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137199382209796 + 127134983422225 = 11713214^2 + 11275415^2 .

It is a cyclic number.

It is not a de Polignac number, because 264334365632021 - 2¹⁴ = 264334365615637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264334365632027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132167182816010 + 132167182816011.

It is an arithmetic number, because the mean of its divisors is an integer number (132167182816011).

Almost surely, 2^{264334365632021} is an apocalyptic number.

It is an amenable number.

264334365632021 is a deficient number, since it is larger than the sum of its proper divisors (1).

264334365632021 is an equidigital number, since it uses as much as digits as its factorization.

264334365632021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 50.

The spelling of 264334365632021 in words is "two hundred sixty-four trillion, three hundred thirty-four billion, three hundred sixty-five million, six hundred thirty-two thousand, twenty-one".