127234389643 has 2 divisors, whose sum is σ = 127234389644. Its totient is φ = 127234389642.

The previous prime is 127234389629. The next prime is 127234389749. The reversal of 127234389643 is 346983432721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127234389643 - 2⁹ = 127234389131 is a prime.

It is not a weakly prime, because it can be changed into another prime (127234389343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63617194821 + 63617194822.

It is an arithmetic number, because the mean of its divisors is an integer number (63617194822).

Almost surely, 2^127234389643 is an apocalyptic number.

127234389643 is a deficient number, since it is larger than the sum of its proper divisors (1).

127234389643 is an equidigital number, since it uses as much as digits as its factorization.

127234389643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 52.

The spelling of 127234389643 in words is "one hundred twenty-seven billion, two hundred thirty-four million, three hundred eighty-nine thousand, six hundred forty-three".