128133866737 has 8 divisors (see below), whose sum is σ = 134886072960. Its totient is φ = 121382492400.

The previous prime is 128133866719. The next prime is 128133866747. The reversal of 128133866737 is 737668331821.

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 128133866737 - 2¹¹ = 128133864689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128133866747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121608 + ... + 520630.

It is an arithmetic number, because the mean of its divisors is an integer number (16860759120).

Almost surely, 2^128133866737 is an apocalyptic number.

It is an amenable number.

128133866737 is a deficient number, since it is larger than the sum of its proper divisors (6752206223).

128133866737 is a wasteful number, since it uses less digits than its factorization.

128133866737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415943.

The product of its digits is 6096384, while the sum is 55.

The spelling of 128133866737 in words is "one hundred twenty-eight billion, one hundred thirty-three million, eight hundred sixty-six thousand, seven hundred thirty-seven".