2128768953 has 8 divisors (see below), whose sum is σ = 2838657600. Its totient is φ = 1419029808.

The previous prime is 2128768921. The next prime is 2128768969. The reversal of 2128768953 is 3598678212.

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

It is not a de Polignac number, because 2128768953 - 2⁵ = 2128768921 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2128768896 and 2128768905.

It is not an unprimeable number, because it can be changed into a prime (2128768553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683 + ... + 65271.

It is an arithmetic number, because the mean of its divisors is an integer number (354832200).

Almost surely, 2^2128768953 is an apocalyptic number.

It is an amenable number.

2128768953 is a deficient number, since it is larger than the sum of its proper divisors (709888647).

2128768953 is a wasteful number, since it uses less digits than its factorization.

2128768953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74751.

The product of its digits is 1451520, while the sum is 51.

The square root of 2128768953 is about 46138.5842110483. The cubic root of 2128768953 is about 1286.4004279315.

The spelling of 2128768953 in words is "two billion, one hundred twenty-eight million, seven hundred sixty-eight thousand, nine hundred fifty-three".