128307310633 has 4 divisors (see below), whose sum is σ = 128310013188. Its totient is φ = 128304608080.

The previous prime is 128307310627. The next prime is 128307310643. The reversal of 128307310633 is 336013703821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 336013703821 = 149 ⋅2255125529.

It can be written as a sum of positive squares in 2 ways, for example, as 98930379024 + 29376931609 = 314532^2 + 171397^2 .

It is a cyclic number.

It is not a de Polignac number, because 128307310633 - 2⁵ = 128307310601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128307310592 and 128307310601.

It is not an unprimeable number, because it can be changed into a prime (128307310643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278766 + ... + 1375447.

It is an arithmetic number, because the mean of its divisors is an integer number (32077503297).

Almost surely, 2^128307310633 is an apocalyptic number.

It is an amenable number.

128307310633 is a deficient number, since it is larger than the sum of its proper divisors (2702555).

128307310633 is an equidigital number, since it uses as much as digits as its factorization.

128307310633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702554.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 128307310633 in words is "one hundred twenty-eight billion, three hundred seven million, three hundred ten thousand, six hundred thirty-three".