187161185255 has 12 divisors (see below), whose sum is σ = 246867150936. Its totient is φ = 136117225200.

The previous prime is 187161185249. The next prime is 187161185257. The reversal of 187161185255 is 552581161781.

It is not a de Polignac number, because 187161185255 - 2⁸ = 187161184999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187161185257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154678061 + ... + 154679270.

It is an arithmetic number, because the mean of its divisors is an integer number (20572262578).

Almost surely, 2^187161185255 is an apocalyptic number.

187161185255 is a deficient number, since it is larger than the sum of its proper divisors (59705965681).

187161185255 is a wasteful number, since it uses less digits than its factorization.

187161185255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309357358 (or 309357347 counting only the distinct ones).

The product of its digits is 672000, while the sum is 50.

The spelling of 187161185255 in words is "one hundred eighty-seven billion, one hundred sixty-one million, one hundred eighty-five thousand, two hundred fifty-five".