27977636413439 has 4 divisors (see below), whose sum is σ = 27977826444360. Its totient is φ = 27977446382520.

The previous prime is 27977636413421. The next prime is 27977636413453. The reversal of 27977636413439 is 93431463677972.

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 27977636413439 - 2⁸ = 27977636413183 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 (27977636413039) 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, 94794449 + ... + 95089130.

It is an arithmetic number, because the mean of its divisors is an integer number (6994456611090).

Almost surely, 2^{27977636413439} is an apocalyptic number.

27977636413439 is a deficient number, since it is larger than the sum of its proper divisors (190030921).

27977636413439 is a wasteful number, since it uses less digits than its factorization.

27977636413439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190030920.

The product of its digits is 864162432, while the sum is 71.

The spelling of 27977636413439 in words is "twenty-seven trillion, nine hundred seventy-seven billion, six hundred thirty-six million, four hundred thirteen thousand, four hundred thirty-nine".