264104300021 has 2 divisors, whose sum is σ = 264104300022. Its totient is φ = 264104300020.

The previous prime is 264104299967. The next prime is 264104300059. The reversal of 264104300021 is 120003401462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231736332100 + 32367967921 = 481390^2 + 179911^2 .

It is a cyclic number.

It is not a de Polignac number, because 264104300021 - 2¹⁴ = 264104283637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 264104300021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264104300321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132052150010 + 132052150011.

It is an arithmetic number, because the mean of its divisors is an integer number (132052150011).

Almost surely, 2^264104300021 is an apocalyptic number.

It is an amenable number.

264104300021 is a deficient number, since it is larger than the sum of its proper divisors (1).

264104300021 is an equidigital number, since it uses as much as digits as its factorization.

264104300021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 264104300021 its reverse (120003401462), we get a palindrome (384107701483).

The spelling of 264104300021 in words is "two hundred sixty-four billion, one hundred four million, three hundred thousand, twenty-one".