128601711 has 12 divisors (see below), whose sum is σ = 212294992. Its totient is φ = 73486656.

The previous prime is 128601703. The next prime is 128601731. The reversal of 128601711 is 117106821.

It is not a de Polignac number, because 128601711 - 2³ = 128601703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128601731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1020586 + ... + 1020711.

Almost surely, 2^128601711 is an apocalyptic number.

128601711 is a deficient number, since it is larger than the sum of its proper divisors (83693281).

128601711 is a wasteful number, since it uses less digits than its factorization.

128601711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041310 (or 2041307 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 128601711 is about 11340.2694412434. The cubic root of 128601711 is about 504.7568819635.

The spelling of 128601711 in words is "one hundred twenty-eight million, six hundred one thousand, seven hundred eleven".