128743359647 has 6 divisors (see below), whose sum is σ = 149762683728. Its totient is φ = 110351451084.

The previous prime is 128743359623. The next prime is 128743359659. The reversal of 128743359647 is 746953347821.

It is not a de Polignac number, because 128743359647 - 2⁸ = 128743359391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128743359247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1313707703 + ... + 1313707800.

It is an arithmetic number, because the mean of its divisors is an integer number (24960447288).

Almost surely, 2^128743359647 is an apocalyptic number.

128743359647 is a deficient number, since it is larger than the sum of its proper divisors (21019324081).

128743359647 is an equidigital number, since it uses as much as digits as its factorization.

128743359647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627415517 (or 2627415510 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 59.

The spelling of 128743359647 in words is "one hundred twenty-eight billion, seven hundred forty-three million, three hundred fifty-nine thousand, six hundred forty-seven".