264264104561 has 2 divisors, whose sum is σ = 264264104562. Its totient is φ = 264264104560.

The previous prime is 264264104551. The next prime is 264264104579. The reversal of 264264104561 is 165401462462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153071867536 + 111192237025 = 391244^2 + 333455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264264104561 is a prime.

It is not a weakly prime, because it can be changed into another prime (264264104551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132132052280 + 132132052281.

It is an arithmetic number, because the mean of its divisors is an integer number (132132052281).

Almost surely, 2^264264104561 is an apocalyptic number.

It is an amenable number.

264264104561 is a deficient number, since it is larger than the sum of its proper divisors (1).

264264104561 is an equidigital number, since it uses as much as digits as its factorization.

264264104561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 264264104561 in words is "two hundred sixty-four billion, two hundred sixty-four million, one hundred four thousand, five hundred sixty-one".