2127591266 has 4 divisors (see below), whose sum is σ = 3191386902. Its totient is φ = 1063795632.

The previous prime is 2127591251. The next prime is 2127591283. The reversal of 2127591266 is 6621957212.

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

It can be written as a sum of positive squares in only one way, i.e., 1987287241 + 140304025 = 44579^2 + 11845^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531897815 + ... + 531897818.

Almost surely, 2^2127591266 is an apocalyptic number.

2127591266 is a deficient number, since it is larger than the sum of its proper divisors (1063795636).

2127591266 is a wasteful number, since it uses less digits than its factorization.

2127591266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063795635.

The product of its digits is 90720, while the sum is 41.

The square root of 2127591266 is about 46125.8199493516. The cubic root of 2127591266 is about 1286.1631614559.

The spelling of 2127591266 in words is "two billion, one hundred twenty-seven million, five hundred ninety-one thousand, two hundred sixty-six".