27554839491 has 16 divisors (see below), whose sum is σ = 38042624160. Its totient is φ = 17719672320.

The previous prime is 27554839489. The next prime is 27554839511. The reversal of 27554839491 is 19493845572.

It is not a de Polignac number, because 27554839491 - 2¹ = 27554839489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27554839421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56950 + ... + 241563.

It is an arithmetic number, because the mean of its divisors is an integer number (2377664010).

Almost surely, 2^27554839491 is an apocalyptic number.

27554839491 is a deficient number, since it is larger than the sum of its proper divisors (10487784669).

27554839491 is a wasteful number, since it uses less digits than its factorization.

27554839491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299606.

The product of its digits is 10886400, while the sum is 57.

The spelling of 27554839491 in words is "twenty-seven billion, five hundred fifty-four million, eight hundred thirty-nine thousand, four hundred ninety-one".