128051693 has 8 divisors (see below), whose sum is σ = 159648960. Its totient is φ = 99780480.

The previous prime is 128051683. The next prime is 128051719. The reversal of 128051693 is 396150821.

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 128051693 - 2⁶ = 128051629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128051663) 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 7 ways as a sum of consecutive naturals, for example, 831428 + ... + 831581.

It is an arithmetic number, because the mean of its divisors is an integer number (19956120).

Almost surely, 2^128051693 is an apocalyptic number.

It is an amenable number.

128051693 is a deficient number, since it is larger than the sum of its proper divisors (31597267).

128051693 is a wasteful number, since it uses less digits than its factorization.

128051693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663027.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 128051693 is about 11315.9927978061. The cubic root of 128051693 is about 504.0362536385.

The spelling of 128051693 in words is "one hundred twenty-eight million, fifty-one thousand, six hundred ninety-three".