355218120391619 has 2 divisors, whose sum is σ = 355218120391620. Its totient is φ = 355218120391618.

The previous prime is 355218120391591. The next prime is 355218120391709. The reversal of 355218120391619 is 916193021812553.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355218120391619 is a prime.

It is a super-2 number, since 2×355218120391619² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (355218120391219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177609060195809 + 177609060195810.

It is an arithmetic number, because the mean of its divisors is an integer number (177609060195810).

Almost surely, 2^{355218120391619} is an apocalyptic number.

355218120391619 is a deficient number, since it is larger than the sum of its proper divisors (1).

355218120391619 is an equidigital number, since it uses as much as digits as its factorization.

355218120391619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3499200, while the sum is 56.

The spelling of 355218120391619 in words is "three hundred fifty-five trillion, two hundred eighteen billion, one hundred twenty million, three hundred ninety-one thousand, six hundred nineteen".