187098025117 has 2 divisors, whose sum is σ = 187098025118. Its totient is φ = 187098025116.

The previous prime is 187098024959. The next prime is 187098025157. The reversal of 187098025117 is 711520890781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186750165316 + 347859801 = 432146^2 + 18651^2 .

It is an emirp because it is prime and its reverse (711520890781) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187098025117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187098025157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93549012558 + 93549012559.

It is an arithmetic number, because the mean of its divisors is an integer number (93549012559).

Almost surely, 2^187098025117 is an apocalyptic number.

It is an amenable number.

187098025117 is a deficient number, since it is larger than the sum of its proper divisors (1).

187098025117 is an equidigital number, since it uses as much as digits as its factorization.

187098025117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 49.

The spelling of 187098025117 in words is "one hundred eighty-seven billion, ninety-eight million, twenty-five thousand, one hundred seventeen".