345657127727 has 2 divisors, whose sum is σ = 345657127728. Its totient is φ = 345657127726.

The previous prime is 345657127703. The next prime is 345657127789. The reversal of 345657127727 is 727721756543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345657127727 - 2¹² = 345657123631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345657120727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172828563863 + 172828563864.

It is an arithmetic number, because the mean of its divisors is an integer number (172828563864).

Almost surely, 2^345657127727 is an apocalyptic number.

345657127727 is a deficient number, since it is larger than the sum of its proper divisors (1).

345657127727 is an equidigital number, since it uses as much as digits as its factorization.

345657127727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17287200, while the sum is 56.

The spelling of 345657127727 in words is "three hundred forty-five billion, six hundred fifty-seven million, one hundred twenty-seven thousand, seven hundred twenty-seven".