2128099499 has 8 divisors (see below), whose sum is σ = 2154593280. Its totient is φ = 2101626216.

The previous prime is 2128099459. The next prime is 2128099517. The reversal of 2128099499 is 9949908212.

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 2128099499 - 2⁸ = 2128099243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2128099499.

It is not an unprimeable number, because it can be changed into a prime (2128099459) 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, 382274 + ... + 387800.

It is an arithmetic number, because the mean of its divisors is an integer number (269324160).

Almost surely, 2^2128099499 is an apocalyptic number.

2128099499 is a deficient number, since it is larger than the sum of its proper divisors (26493781).

2128099499 is an equidigital number, since it uses as much as digits as its factorization.

2128099499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10249.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 2128099499 is about 46131.3288232628. The cubic root of 2128099499 is about 1286.2655649783.

The spelling of 2128099499 in words is "two billion, one hundred twenty-eight million, ninety-nine thousand, four hundred ninety-nine".