2128368617 has 2 divisors, whose sum is σ = 2128368618. Its totient is φ = 2128368616.

The previous prime is 2128368611. The next prime is 2128368623. The reversal of 2128368617 is 7168638212.

It is a balanced prime because it is at equal distance from previous prime (2128368611) and next prime (2128368623).

It can be written as a sum of positive squares in only one way, i.e., 1918089616 + 210279001 = 43796^2 + 14501^2 .

It is a cyclic number.

It is not a de Polignac number, because 2128368617 - 2¹⁸ = 2128106473 is a prime.

It is a super-3 number, since 3×2128368617³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2128368611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064184308 + 1064184309.

It is an arithmetic number, because the mean of its divisors is an integer number (1064184309).

Almost surely, 2^2128368617 is an apocalyptic number.

It is an amenable number.

2128368617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128368617 is an equidigital number, since it uses as much as digits as its factorization.

2128368617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 2128368617 is about 46134.2455991208. The cubic root of 2128368617 is about 1286.3197827794.

The spelling of 2128368617 in words is "two billion, one hundred twenty-eight million, three hundred sixty-eight thousand, six hundred seventeen".