27800005025197 has 2 divisors, whose sum is σ = 27800005025198. Its totient is φ = 27800005025196.

The previous prime is 27800005025113. The next prime is 27800005025297. The reversal of 27800005025197 is 79152050000872.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23775122448676 + 4024882576521 = 4875974^2 + 2006211^2 .

It is a cyclic number.

It is not a de Polignac number, because 27800005025197 - 2¹⁵ = 27800004992429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27800005025297) 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, 13900002512598 + 13900002512599.

It is an arithmetic number, because the mean of its divisors is an integer number (13900002512599).

Almost surely, 2^{27800005025197} is an apocalyptic number.

It is an amenable number.

27800005025197 is a deficient number, since it is larger than the sum of its proper divisors (1).

27800005025197 is an equidigital number, since it uses as much as digits as its factorization.

27800005025197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 46.

The spelling of 27800005025197 in words is "twenty-seven trillion, eight hundred billion, five million, twenty-five thousand, one hundred ninety-seven".