5257226106666 has 12 divisors (see below), whose sum is σ = 11390656564482. Its totient is φ = 1752408702216.

The previous prime is 5257226106659. The next prime is 5257226106667. The reversal of 5257226106666 is 6666016227525.

It can be written as a sum of positive squares in only one way, i.e., 5208596595225 + 48629511441 = 2282235^2 + 220521^2 .

It is a super-2 number, since 2×5257226106666² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5257226106667) 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 in 5 ways as a sum of consecutive naturals, for example, 146034058501 + ... + 146034058536.

Almost surely, 2^{5257226106666} is an apocalyptic number.

5257226106666 is an abundant number, since it is smaller than the sum of its proper divisors (6133430457816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5257226106666 is a wasteful number, since it uses less digits than its factorization.

5257226106666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292068117045 (or 292068117042 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 5257226106666 in words is "five trillion, two hundred fifty-seven billion, two hundred twenty-six million, one hundred six thousand, six hundred sixty-six".