355555161555553 has 2 divisors, whose sum is σ = 355555161555554. Its totient is φ = 355555161555552.

The previous prime is 355555161555541. The next prime is 355555161555563.

355555161555553 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350970886603089 + 4584274952464 = 18734217^2 + 2141092^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 355555161555553 - 2¹⁷ = 355555161424481 is a prime.

It is not a weakly prime, because it can be changed into another prime (355555161555563) 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, 177777580777776 + 177777580777777.

It is an arithmetic number, because the mean of its divisors is an integer number (177777580777777).

Almost surely, 2^{355555161555553} is an apocalyptic number.

It is an amenable number.

355555161555553 is a deficient number, since it is larger than the sum of its proper divisors (1).

355555161555553 is an equidigital number, since it uses as much as digits as its factorization.

355555161555553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 527343750, while the sum is 64.

The spelling of 355555161555553 in words is "three hundred fifty-five trillion, five hundred fifty-five billion, one hundred sixty-one million, five hundred fifty-five thousand, five hundred fifty-three".