27863743117 has 4 divisors (see below), whose sum is σ = 31844277856. Its totient is φ = 23883208380.

The previous prime is 27863743091. The next prime is 27863743129. The reversal of 27863743117 is 71134736872.

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 a cyclic number.

It is not a de Polignac number, because 27863743117 - 2²³ = 27855354509 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 (27863743157) 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, 1990267359 + ... + 1990267372.

It is an arithmetic number, because the mean of its divisors is an integer number (7961069464).

Almost surely, 2^27863743117 is an apocalyptic number.

It is an amenable number.

27863743117 is a deficient number, since it is larger than the sum of its proper divisors (3980534739).

27863743117 is an equidigital number, since it uses as much as digits as its factorization.

27863743117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980534738.

The product of its digits is 1185408, while the sum is 49.

The spelling of 27863743117 in words is "twenty-seven billion, eight hundred sixty-three million, seven hundred forty-three thousand, one hundred seventeen".