264627218461 has 2 divisors, whose sum is σ = 264627218462. Its totient is φ = 264627218460.

The previous prime is 264627218407. The next prime is 264627218467. The reversal of 264627218461 is 164812726462.

264627218461 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., 260559202500 + 4068015961 = 510450^2 + 63781^2 .

It is a cyclic number.

It is not a de Polignac number, because 264627218461 - 2⁷ = 264627218333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264627218467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132313609230 + 132313609231.

It is an arithmetic number, because the mean of its divisors is an integer number (132313609231).

Almost surely, 2^264627218461 is an apocalyptic number.

It is an amenable number.

264627218461 is a deficient number, since it is larger than the sum of its proper divisors (1).

264627218461 is an equidigital number, since it uses as much as digits as its factorization.

264627218461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 49.

The spelling of 264627218461 in words is "two hundred sixty-four billion, six hundred twenty-seven million, two hundred eighteen thousand, four hundred sixty-one".