27449424491 has 4 divisors (see below), whose sum is σ = 28395956400. Its totient is φ = 26502892584.

The previous prime is 27449424479. The next prime is 27449424521. The reversal of 27449424491 is 19442494472.

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 27449424491 - 2¹⁰ = 27449423467 is a prime.

It is a super-2 number, since 2×27449424491² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27449424461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473265911 + ... + 473265968.

It is an arithmetic number, because the mean of its divisors is an integer number (7098989100).

Almost surely, 2^27449424491 is an apocalyptic number.

27449424491 is a deficient number, since it is larger than the sum of its proper divisors (946531909).

27449424491 is an equidigital number, since it uses as much as digits as its factorization.

27449424491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946531908.

The product of its digits is 2322432, while the sum is 50.

The spelling of 27449424491 in words is "twenty-seven billion, four hundred forty-nine million, four hundred twenty-four thousand, four hundred ninety-one".