128519601 has 24 divisors (see below), whose sum is σ = 202327200. Its totient is φ = 72338112.

The previous prime is 128519597. The next prime is 128519603. The reversal of 128519601 is 106915821.

It is not a de Polignac number, because 128519601 - 2² = 128519597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128519603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3325 + ... + 16373.

It is an arithmetic number, because the mean of its divisors is an integer number (8430300).

Almost surely, 2^128519601 is an apocalyptic number.

It is an amenable number.

128519601 is a deficient number, since it is larger than the sum of its proper divisors (73807599).

128519601 is a wasteful number, since it uses less digits than its factorization.

128519601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13133 (or 13126 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 128519601 is about 11336.6485788349. The cubic root of 128519601 is about 504.6494328708.

The spelling of 128519601 in words is "one hundred twenty-eight million, five hundred nineteen thousand, six hundred one".