27377055197 has 2 divisors, whose sum is σ = 27377055198. Its totient is φ = 27377055196.

The previous prime is 27377055191. The next prime is 27377055241. The reversal of 27377055197 is 79155077372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27332686276 + 44368921 = 165326^2 + 6661^2 .

It is a cyclic number.

It is not a de Polignac number, because 27377055197 - 2²⁰ = 27376006621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27377055191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13688527598 + 13688527599.

It is an arithmetic number, because the mean of its divisors is an integer number (13688527599).

Almost surely, 2^27377055197 is an apocalyptic number.

It is an amenable number.

27377055197 is a deficient number, since it is larger than the sum of its proper divisors (1).

27377055197 is an equidigital number, since it uses as much as digits as its factorization.

27377055197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3241350, while the sum is 53.

The spelling of 27377055197 in words is "twenty-seven billion, three hundred seventy-seven million, fifty-five thousand, one hundred ninety-seven".