355215345013 has 6 divisors (see below), whose sum is σ = 362043980354. Its totient is φ = 348513165936.

The previous prime is 355215344977. The next prime is 355215345019. The reversal of 355215345013 is 310543512553.

It can be written as a sum of positive squares in 3 ways, for example, as 228462968484 + 126752376529 = 477978^2 + 356023^2 .

It is a de Polignac number, because none of the positive numbers 2^k-355215345013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355215345019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63225270 + ... + 63230887.

Almost surely, 2^355215345013 is an apocalyptic number.

It is an amenable number.

355215345013 is a deficient number, since it is larger than the sum of its proper divisors (6828635341).

355215345013 is an equidigital number, since it uses as much as digits as its factorization.

355215345013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126456263 (or 126456210 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 37.

Adding to 355215345013 its reverse (310543512553), we get a palindrome (665758857566).

The spelling of 355215345013 in words is "three hundred fifty-five billion, two hundred fifteen million, three hundred forty-five thousand, thirteen".