556501006055161 has 2 divisors, whose sum is σ = 556501006055162. Its totient is φ = 556501006055160.

The previous prime is 556501006055149. The next prime is 556501006055249. The reversal of 556501006055161 is 161550600105655.

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., 287260296050025 + 269240710005136 = 16948755^2 + 16408556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556501006055161 is a prime.

It is not a weakly prime, because it can be changed into another prime (556501006055131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278250503027580 + 278250503027581.

It is an arithmetic number, because the mean of its divisors is an integer number (278250503027581).

Almost surely, 2^{556501006055161} is an apocalyptic number.

It is an amenable number.

556501006055161 is a deficient number, since it is larger than the sum of its proper divisors (1).

556501006055161 is an equidigital number, since it uses as much as digits as its factorization.

556501006055161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 556501006055161 in words is "five hundred fifty-six trillion, five hundred one billion, six million, fifty-five thousand, one hundred sixty-one".