27539799839 has 4 divisors (see below), whose sum is σ = 27596350224. Its totient is φ = 27483249456.

The previous prime is 27539799829. The next prime is 27539799841. The reversal of 27539799839 is 93899793572.

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 27539799839 - 2¹⁶ = 27539734303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27539799829) 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, 28274462 + ... + 28275435.

It is an arithmetic number, because the mean of its divisors is an integer number (6899087556).

Almost surely, 2^27539799839 is an apocalyptic number.

27539799839 is a deficient number, since it is larger than the sum of its proper divisors (56550385).

27539799839 is an equidigital number, since it uses as much as digits as its factorization.

27539799839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56550384.

The product of its digits is 231472080, while the sum is 71.

The spelling of 27539799839 in words is "twenty-seven billion, five hundred thirty-nine million, seven hundred ninety-nine thousand, eight hundred thirty-nine".