56605206375121 has 2 divisors, whose sum is σ = 56605206375122. Its totient is φ = 56605206375120.

The previous prime is 56605206375077. The next prime is 56605206375143. The reversal of 56605206375121 is 12157360250665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29962059485121 + 26643146890000 = 5473761^2 + 5161700^2 .

It is a cyclic number.

It is not a de Polignac number, because 56605206375121 - 2⁷ = 56605206374993 is a prime.

It is not a weakly prime, because it can be changed into another prime (56605206375821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28302603187560 + 28302603187561.

It is an arithmetic number, because the mean of its divisors is an integer number (28302603187561).

Almost surely, 2^{56605206375121} is an apocalyptic number.

It is an amenable number.

56605206375121 is a deficient number, since it is larger than the sum of its proper divisors (1).

56605206375121 is an equidigital number, since it uses as much as digits as its factorization.

56605206375121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 56605206375121 in words is "fifty-six trillion, six hundred five billion, two hundred six million, three hundred seventy-five thousand, one hundred twenty-one".