27913638873 has 4 divisors (see below), whose sum is σ = 37218185168. Its totient is φ = 18609092580.

The previous prime is 27913638871. The next prime is 27913638941. The reversal of 27913638873 is 37883631972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27913638873 - 2¹ = 27913638871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27913638871) 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, 4652273143 + ... + 4652273148.

It is an arithmetic number, because the mean of its divisors is an integer number (9304546292).

Almost surely, 2^27913638873 is an apocalyptic number.

It is an amenable number.

27913638873 is a deficient number, since it is larger than the sum of its proper divisors (9304546295).

27913638873 is an equidigital number, since it uses as much as digits as its factorization.

27913638873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9304546294.

The product of its digits is 9144576, while the sum is 57.

The spelling of 27913638873 in words is "twenty-seven billion, nine hundred thirteen million, six hundred thirty-eight thousand, eight hundred seventy-three".