27091991259 has 6 divisors (see below), whose sum is σ = 39132876276. Its totient is φ = 18061327500.

The previous prime is 27091991243. The next prime is 27091991281. The reversal of 27091991259 is 95219919072.

It is not a de Polignac number, because 27091991259 - 2⁴ = 27091991243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27091991219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1505110617 + ... + 1505110634.

It is an arithmetic number, because the mean of its divisors is an integer number (6522146046).

Almost surely, 2^27091991259 is an apocalyptic number.

27091991259 is a deficient number, since it is larger than the sum of its proper divisors (12040885017).

27091991259 is a wasteful number, since it uses less digits than its factorization.

27091991259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010221257 (or 3010221254 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 54.

The spelling of 27091991259 in words is "twenty-seven billion, ninety-one million, nine hundred ninety-one thousand, two hundred fifty-nine".