27917287423 has 4 divisors (see below), whose sum is σ = 29386618360. Its totient is φ = 26447956488.

The previous prime is 27917287421. The next prime is 27917287483. The reversal of 27917287423 is 32478271972.

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 27917287423 - 2¹ = 27917287421 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27917287421) 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, 734665440 + ... + 734665477.

It is an arithmetic number, because the mean of its divisors is an integer number (7346654590).

Almost surely, 2^27917287423 is an apocalyptic number.

27917287423 is a deficient number, since it is larger than the sum of its proper divisors (1469330937).

27917287423 is a wasteful number, since it uses less digits than its factorization.

27917287423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469330936.

The product of its digits is 2370816, while the sum is 52.

The spelling of 27917287423 in words is "twenty-seven billion, nine hundred seventeen million, two hundred eighty-seven thousand, four hundred twenty-three".