27400019465191 has 2 divisors, whose sum is σ = 27400019465192. Its totient is φ = 27400019465190.

The previous prime is 27400019465173. The next prime is 27400019465213. The reversal of 27400019465191 is 19156491000472.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27400019465191 is a prime.

It is a super-2 number, since 2×27400019465191² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27400019465131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13700009732595 + 13700009732596.

It is an arithmetic number, because the mean of its divisors is an integer number (13700009732596).

Almost surely, 2^{27400019465191} is an apocalyptic number.

27400019465191 is a deficient number, since it is larger than the sum of its proper divisors (1).

27400019465191 is an equidigital number, since it uses as much as digits as its factorization.

27400019465191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 27400019465191 in words is "twenty-seven trillion, four hundred billion, nineteen million, four hundred sixty-five thousand, one hundred ninety-one".