556127266553666 has 32 divisors (see below), whose sum is σ = 877108019194800. Its totient is φ = 264072464974080.

The previous prime is 556127266553653. The next prime is 556127266553737. The reversal of 556127266553666 is 666355662721655.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 209471463050641 + 346655803503025 = 14473129^2 + 18618695^2 .

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 556127266553666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814152200 + ... + 814834988.

Almost surely, 2^{556127266553666} is an apocalyptic number.

556127266553666 is a deficient number, since it is larger than the sum of its proper divisors (320980752641134).

556127266553666 is a wasteful number, since it uses less digits than its factorization.

556127266553666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913094.

The product of its digits is 2449440000, while the sum is 71.

The spelling of 556127266553666 in words is "five hundred fifty-six trillion, one hundred twenty-seven billion, two hundred sixty-six million, five hundred fifty-three thousand, six hundred sixty-six".