27278131137 has 4 divisors (see below), whose sum is σ = 36370841520. Its totient is φ = 18185420756.

The previous prime is 27278131093. The next prime is 27278131151. The reversal of 27278131137 is 73113187272.

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 27278131137 - 2⁷ = 27278131009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27278131157) 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, 4546355187 + ... + 4546355192.

It is an arithmetic number, because the mean of its divisors is an integer number (9092710380).

Almost surely, 2^27278131137 is an apocalyptic number.

It is an amenable number.

27278131137 is a deficient number, since it is larger than the sum of its proper divisors (9092710383).

27278131137 is an equidigital number, since it uses as much as digits as its factorization.

27278131137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9092710382.

The product of its digits is 98784, while the sum is 42.

The spelling of 27278131137 in words is "twenty-seven billion, two hundred seventy-eight million, one hundred thirty-one thousand, one hundred thirty-seven".