355105213217 has 2 divisors, whose sum is σ = 355105213218. Its totient is φ = 355105213216.

The previous prime is 355105213213. The next prime is 355105213241. The reversal of 355105213217 is 712312501553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264598100881 + 90507112336 = 514391^2 + 300844^2 .

It is a cyclic number.

It is not a de Polignac number, because 355105213217 - 2² = 355105213213 is a prime.

It is not a weakly prime, because it can be changed into another prime (355105213213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177552606608 + 177552606609.

It is an arithmetic number, because the mean of its divisors is an integer number (177552606609).

Almost surely, 2^355105213217 is an apocalyptic number.

It is an amenable number.

355105213217 is a deficient number, since it is larger than the sum of its proper divisors (1).

355105213217 is an equidigital number, since it uses as much as digits as its factorization.

355105213217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 35.

The spelling of 355105213217 in words is "three hundred fifty-five billion, one hundred five million, two hundred thirteen thousand, two hundred seventeen".