355555161424481 has 2 divisors, whose sum is σ = 355555161424482. Its totient is φ = 355555161424480.

The previous prime is 355555161424471. The next prime is 355555161424487. The reversal of 355555161424481 is 184424161555553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191838427830625 + 163716733593856 = 13850575^2 + 12795184^2 .

It is a cyclic number.

It is not a de Polignac number, because 355555161424481 - 2³⁰ = 355554087682657 is a prime.

It is a super-3 number, since 3×355555161424481³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 355555161424481.

It is not a weakly prime, because it can be changed into another prime (355555161424487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177777580712240 + 177777580712241.

It is an arithmetic number, because the mean of its divisors is an integer number (177777580712241).

Almost surely, 2^{355555161424481} is an apocalyptic number.

It is an amenable number.

355555161424481 is a deficient number, since it is larger than the sum of its proper divisors (1).

355555161424481 is an equidigital number, since it uses as much as digits as its factorization.

355555161424481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600000, while the sum is 59.

The spelling of 355555161424481 in words is "three hundred fifty-five trillion, five hundred fifty-five billion, one hundred sixty-one million, four hundred twenty-four thousand, four hundred eighty-one".