346421067647 has 2 divisors, whose sum is σ = 346421067648. Its totient is φ = 346421067646.

The previous prime is 346421067631. The next prime is 346421067667. The reversal of 346421067647 is 746760124643.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 346421067647 - 2⁴ = 346421067631 is a prime.

It is a super-2 number, since 2×346421067647² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 346421067595 and 346421067604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346421067607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173210533823 + 173210533824.

It is an arithmetic number, because the mean of its divisors is an integer number (173210533824).

Almost surely, 2^346421067647 is an apocalyptic number.

346421067647 is a deficient number, since it is larger than the sum of its proper divisors (1).

346421067647 is an equidigital number, since it uses as much as digits as its factorization.

346421067647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 50.

The spelling of 346421067647 in words is "three hundred forty-six billion, four hundred twenty-one million, sixty-seven thousand, six hundred forty-seven".