128516011 has 8 divisors (see below), whose sum is σ = 138729024. Its totient is φ = 118349760.

The previous prime is 128515993. The next prime is 128516027. The reversal of 128516011 is 110615821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128516011 - 2¹⁷ = 128384939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128516041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5866 + ... + 17071.

It is an arithmetic number, because the mean of its divisors is an integer number (17341128).

Almost surely, 2^128516011 is an apocalyptic number.

128516011 is a deficient number, since it is larger than the sum of its proper divisors (10213013).

128516011 is a wasteful number, since it uses less digits than its factorization.

128516011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23381.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 128516011 is about 11336.4902416930. The cubic root of 128516011 is about 504.6447339551.

The spelling of 128516011 in words is "one hundred twenty-eight million, five hundred sixteen thousand, eleven".