556400626277 has 2 divisors, whose sum is σ = 556400626278. Its totient is φ = 556400626276.

The previous prime is 556400626261. The next prime is 556400626351. The reversal of 556400626277 is 772626004655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532733572996 + 23667053281 = 729886^2 + 153841^2 .

It is a cyclic number.

It is not a de Polignac number, because 556400626277 - 2⁴ = 556400626261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556400620277) 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, 278200313138 + 278200313139.

It is an arithmetic number, because the mean of its divisors is an integer number (278200313139).

Almost surely, 2^556400626277 is an apocalyptic number.

It is an amenable number.

556400626277 is a deficient number, since it is larger than the sum of its proper divisors (1).

556400626277 is an equidigital number, since it uses as much as digits as its factorization.

556400626277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 556400626277 in words is "five hundred fifty-six billion, four hundred million, six hundred twenty-six thousand, two hundred seventy-seven".