187378831255 has 16 divisors (see below), whose sum is σ = 280338200064. Its totient is φ = 116807582880.

The previous prime is 187378831249. The next prime is 187378831271. The reversal of 187378831255 is 552138873781.

187378831255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 187378831255 - 2⁵ = 187378831223 is a prime.

It is a super-2 number, since 2×187378831255² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 187378831255.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243348747 + ... + 243349516.

It is an arithmetic number, because the mean of its divisors is an integer number (17521137504).

Almost surely, 2^187378831255 is an apocalyptic number.

187378831255 is a deficient number, since it is larger than the sum of its proper divisors (92959368809).

187378831255 is a wasteful number, since it uses less digits than its factorization.

187378831255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486698286.

The product of its digits is 11289600, while the sum is 58.

The spelling of 187378831255 in words is "one hundred eighty-seven billion, three hundred seventy-eight million, eight hundred thirty-one thousand, two hundred fifty-five".