346646653021 has 2 divisors, whose sum is σ = 346646653022. Its totient is φ = 346646653020.

The previous prime is 346646652997. The next prime is 346646653079. The reversal of 346646653021 is 120356646643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276812776900 + 69833876121 = 526130^2 + 264261^2 .

It is an emirp because it is prime and its reverse (120356646643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 346646653021 - 2¹³ = 346646644829 is a prime.

It is a super-3 number, since 3×346646653021³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346646653621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173323326510 + 173323326511.

It is an arithmetic number, because the mean of its divisors is an integer number (173323326511).

Almost surely, 2^346646653021 is an apocalyptic number.

It is an amenable number.

346646653021 is a deficient number, since it is larger than the sum of its proper divisors (1).

346646653021 is an equidigital number, since it uses as much as digits as its factorization.

346646653021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 46.

The spelling of 346646653021 in words is "three hundred forty-six billion, six hundred forty-six million, six hundred fifty-three thousand, twenty-one".