27097904971 has 4 divisors (see below), whose sum is σ = 27106743352. Its totient is φ = 27089066592.

The previous prime is 27097904969. The next prime is 27097905001. The reversal of 27097904971 is 17940979072.

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 27097904971 - 2¹ = 27097904969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27097904941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4414590 + ... + 4420723.

It is an arithmetic number, because the mean of its divisors is an integer number (6776685838).

Almost surely, 2^27097904971 is an apocalyptic number.

27097904971 is a deficient number, since it is larger than the sum of its proper divisors (8838381).

27097904971 is an equidigital number, since it uses as much as digits as its factorization.

27097904971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8838380.

The product of its (nonzero) digits is 2000376, while the sum is 55.

The spelling of 27097904971 in words is "twenty-seven billion, ninety-seven million, nine hundred four thousand, nine hundred seventy-one".