355390246068469 has 2 divisors, whose sum is σ = 355390246068470. Its totient is φ = 355390246068468.

The previous prime is 355390246068467. The next prime is 355390246068497. The reversal of 355390246068469 is 964860642093553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234792796702500 + 120597449365969 = 15322950^2 + 10981687^2 .

It is a cyclic number.

It is not a de Polignac number, because 355390246068469 - 2¹ = 355390246068467 is a prime.

It is a super-2 number, since 2×355390246068469² (a number of 30 digits) contains 22 as substring.

Together with 355390246068467, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 355390246068398 and 355390246068407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355390246068467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177695123034234 + 177695123034235.

It is an arithmetic number, because the mean of its divisors is an integer number (177695123034235).

Almost surely, 2^{355390246068469} is an apocalyptic number.

It is an amenable number.

355390246068469 is a deficient number, since it is larger than the sum of its proper divisors (1).

355390246068469 is an equidigital number, since it uses as much as digits as its factorization.

355390246068469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1007769600, while the sum is 70.

The spelling of 355390246068469 in words is "three hundred fifty-five trillion, three hundred ninety billion, two hundred forty-six million, sixty-eight thousand, four hundred sixty-nine".