2128719017 has 8 divisors (see below), whose sum is σ = 2241782400. Its totient is φ = 2015758224.

The previous prime is 2128719001. The next prime is 2128719041. The reversal of 2128719017 is 7109178212.

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 2128719017 - 2⁴ = 2128719001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128719317) 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, 18959 + ... + 67947.

It is an arithmetic number, because the mean of its divisors is an integer number (280222800).

Almost surely, 2^2128719017 is an apocalyptic number.

It is an amenable number.

2128719017 is a deficient number, since it is larger than the sum of its proper divisors (113063383).

2128719017 is a wasteful number, since it uses less digits than its factorization.

2128719017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51295.

The product of its (nonzero) digits is 14112, while the sum is 38.

The square root of 2128719017 is about 46138.0430555957. The cubic root of 2128719017 is about 1286.3903691925.

It can be divided in two parts, 21287 and 19017, that added together give a palindrome (40304).

The spelling of 2128719017 in words is "two billion, one hundred twenty-eight million, seven hundred nineteen thousand, seventeen".