27400799191 has 2 divisors, whose sum is σ = 27400799192. Its totient is φ = 27400799190.

The previous prime is 27400799113. The next prime is 27400799233. The reversal of 27400799191 is 19199700472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27400799191 - 2²¹ = 27398702039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27400799891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13700399595 + 13700399596.

It is an arithmetic number, because the mean of its divisors is an integer number (13700399596).

Almost surely, 2^27400799191 is an apocalyptic number.

27400799191 is a deficient number, since it is larger than the sum of its proper divisors (1).

27400799191 is an equidigital number, since it uses as much as digits as its factorization.

27400799191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 49.

The spelling of 27400799191 in words is "twenty-seven billion, four hundred million, seven hundred ninety-nine thousand, one hundred ninety-one".