2128262899 has 4 divisors (see below), whose sum is σ = 2432300464. Its totient is φ = 1824225336.

The previous prime is 2128262897. The next prime is 2128262911. The reversal of 2128262899 is 9982628212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2128262899 - 2¹ = 2128262897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128262893) 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, 152018772 + ... + 152018785.

It is an arithmetic number, because the mean of its divisors is an integer number (608075116).

Almost surely, 2^2128262899 is an apocalyptic number.

2128262899 is a deficient number, since it is larger than the sum of its proper divisors (304037565).

2128262899 is an equidigital number, since it uses as much as digits as its factorization.

2128262899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304037564.

The product of its digits is 497664, while the sum is 49.

The square root of 2128262899 is about 46133.0998199774. The cubic root of 2128262899 is about 1286.2984848699.

The spelling of 2128262899 in words is "two billion, one hundred twenty-eight million, two hundred sixty-two thousand, eight hundred ninety-nine".