27426318891 has 8 divisors (see below), whose sum is σ = 37009008960. Its totient is φ = 18063920712.

The previous prime is 27426318889. The next prime is 27426318967. The reversal of 27426318891 is 19881362472.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27426318891 - 2¹ = 27426318889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27426316891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55072681 + ... + 55073178.

It is an arithmetic number, because the mean of its divisors is an integer number (4626126120).

Almost surely, 2^27426318891 is an apocalyptic number.

27426318891 is a deficient number, since it is larger than the sum of its proper divisors (9582690069).

27426318891 is a wasteful number, since it uses less digits than its factorization.

27426318891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110145945.

The product of its digits is 1161216, while the sum is 51.

The spelling of 27426318891 in words is "twenty-seven billion, four hundred twenty-six million, three hundred eighteen thousand, eight hundred ninety-one".