556656506117 has 2 divisors, whose sum is σ = 556656506118. Its totient is φ = 556656506116.

The previous prime is 556656506053. The next prime is 556656506129. The reversal of 556656506117 is 711605656655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400437105601 + 156219400516 = 632801^2 + 395246^2 .

It is a cyclic number.

It is not a de Polignac number, because 556656506117 - 2⁶ = 556656506053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556656502117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278328253058 + 278328253059.

It is an arithmetic number, because the mean of its divisors is an integer number (278328253059).

Almost surely, 2^556656506117 is an apocalyptic number.

It is an amenable number.

556656506117 is a deficient number, since it is larger than the sum of its proper divisors (1).

556656506117 is an equidigital number, since it uses as much as digits as its factorization.

556656506117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670000, while the sum is 53.

The spelling of 556656506117 in words is "five hundred fifty-six billion, six hundred fifty-six million, five hundred six thousand, one hundred seventeen".