27318981037 has 4 divisors (see below), whose sum is σ = 27335370816. Its totient is φ = 27302591260.

The previous prime is 27318981031. The next prime is 27318981059. The reversal of 27318981037 is 73018981372.

It is a happy number.

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 27318981037 - 2¹¹ = 27318978989 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27318981031) 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, 8192389 + ... + 8195722.

It is an arithmetic number, because the mean of its divisors is an integer number (6833842704).

Almost surely, 2^27318981037 is an apocalyptic number.

It is an amenable number.

27318981037 is a deficient number, since it is larger than the sum of its proper divisors (16389779).

27318981037 is a wasteful number, since it uses less digits than its factorization.

27318981037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16389778.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 27318981037 in words is "twenty-seven billion, three hundred eighteen million, nine hundred eighty-one thousand, thirty-seven".