6600464255557 has 2 divisors, whose sum is σ = 6600464255558. Its totient is φ = 6600464255556.

The previous prime is 6600464255513. The next prime is 6600464255587. The reversal of 6600464255557 is 7555524640066.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3435484492036 + 3164979763521 = 1853506^2 + 1779039^2 .

It is a cyclic number.

It is not a de Polignac number, because 6600464255557 - 2³⁹ = 6050708441669 is a prime.

It is a super-2 number, since 2×6600464255557² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6600464255498 and 6600464255507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6600464255587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3300232127778 + 3300232127779.

It is an arithmetic number, because the mean of its divisors is an integer number (3300232127779).

Almost surely, 2^{6600464255557} is an apocalyptic number.

It is an amenable number.

6600464255557 is a deficient number, since it is larger than the sum of its proper divisors (1).

6600464255557 is an equidigital number, since it uses as much as digits as its factorization.

6600464255557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240000, while the sum is 55.

The spelling of 6600464255557 in words is "six trillion, six hundred billion, four hundred sixty-four million, two hundred fifty-five thousand, five hundred fifty-seven".