264648259517 has 2 divisors, whose sum is σ = 264648259518. Its totient is φ = 264648259516.

The previous prime is 264648259493. The next prime is 264648259567. The reversal of 264648259517 is 715952846462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216728422681 + 47919836836 = 465541^2 + 218906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264648259517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264648259567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132324129758 + 132324129759.

It is an arithmetic number, because the mean of its divisors is an integer number (132324129759).

Almost surely, 2^264648259517 is an apocalyptic number.

It is an amenable number.

264648259517 is a deficient number, since it is larger than the sum of its proper divisors (1).

264648259517 is an equidigital number, since it uses as much as digits as its factorization.

264648259517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29030400, while the sum is 59.

The spelling of 264648259517 in words is "two hundred sixty-four billion, six hundred forty-eight million, two hundred fifty-nine thousand, five hundred seventeen".