128061633 has 16 divisors (see below), whose sum is σ = 195577856. Its totient is φ = 73014480.

The previous prime is 128061617. The next prime is 128061649. The reversal of 128061633 is 336160821.

It is an interprime number because it is at equal distance from previous prime (128061617) and next prime (128061649).

It is not a de Polignac number, because 128061633 - 2⁴ = 128061617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128061633.

It is not an unprimeable number, because it can be changed into a prime (128060633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3138 + ... + 16308.

It is an arithmetic number, because the mean of its divisors is an integer number (12223616).

Almost surely, 2^128061633 is an apocalyptic number.

It is an amenable number.

128061633 is a deficient number, since it is larger than the sum of its proper divisors (67516223).

128061633 is a wasteful number, since it uses less digits than its factorization.

128061633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13644.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 128061633 is about 11316.4319906939. The cubic root of 128061633 is about 504.0492952225.

The spelling of 128061633 in words is "one hundred twenty-eight million, sixty-one thousand, six hundred thirty-three".