264406223012461 has 2 divisors, whose sum is σ = 264406223012462. Its totient is φ = 264406223012460.

The previous prime is 264406223012453. The next prime is 264406223012473. The reversal of 264406223012461 is 164210322604462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256134737724100 + 8271485288361 = 16004210^2 + 2876019^2 .

It is a cyclic number.

It is not a de Polignac number, because 264406223012461 - 2³ = 264406223012453 is a prime.

It is a super-3 number, since 3×264406223012461³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264406223012401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132203111506230 + 132203111506231.

It is an arithmetic number, because the mean of its divisors is an integer number (132203111506231).

Almost surely, 2^{264406223012461} is an apocalyptic number.

It is an amenable number.

264406223012461 is a deficient number, since it is larger than the sum of its proper divisors (1).

264406223012461 is an equidigital number, since it uses as much as digits as its factorization.

264406223012461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 43.

The spelling of 264406223012461 in words is "two hundred sixty-four trillion, four hundred six billion, two hundred twenty-three million, twelve thousand, four hundred sixty-one".