187275252217 has 2 divisors, whose sum is σ = 187275252218. Its totient is φ = 187275252216.

The previous prime is 187275252181. The next prime is 187275252223. The reversal of 187275252217 is 712252572781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120675643456 + 66599608761 = 347384^2 + 258069^2 .

It is a cyclic number.

It is not a de Polignac number, because 187275252217 - 2¹⁵ = 187275219449 is a prime.

It is not a weakly prime, because it can be changed into another prime (187275252517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93637626108 + 93637626109.

It is an arithmetic number, because the mean of its divisors is an integer number (93637626109).

Almost surely, 2^187275252217 is an apocalyptic number.

It is an amenable number.

187275252217 is a deficient number, since it is larger than the sum of its proper divisors (1).

187275252217 is an equidigital number, since it uses as much as digits as its factorization.

187275252217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1097600, while the sum is 49.

The spelling of 187275252217 in words is "one hundred eighty-seven billion, two hundred seventy-five million, two hundred fifty-two thousand, two hundred seventeen".