128330155657 has 8 divisors (see below), whose sum is σ = 140160666240. Its totient is φ = 116527000560.

The previous prime is 128330155631. The next prime is 128330155669. The reversal of 128330155657 is 756551033821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128330155657 is a prime.

It is a super-3 number, since 3×128330155657³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128330155627) 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, 6829057 + ... + 6847822.

It is an arithmetic number, because the mean of its divisors is an integer number (17520083280).

Almost surely, 2^128330155657 is an apocalyptic number.

It is an amenable number.

128330155657 is a deficient number, since it is larger than the sum of its proper divisors (11830510583).

128330155657 is a wasteful number, since it uses less digits than its factorization.

128330155657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13677743.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 128330155657 in words is "one hundred twenty-eight billion, three hundred thirty million, one hundred fifty-five thousand, six hundred fifty-seven".