187104008240 has 80 divisors (see below), whose sum is σ = 454177145088. Its totient is φ = 71548739328.

The previous prime is 187104008209. The next prime is 187104008249. The reversal of 187104008240 is 42800401781.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 187104008240.

It is not an unprimeable number, because it can be changed into a prime (187104008249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3482219 + ... + 3535541.

Almost surely, 2^187104008240 is an apocalyptic number.

187104008240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 187104008240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227088572544).

187104008240 is an abundant number, since it is smaller than the sum of its proper divisors (267073136848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

187104008240 is a wasteful number, since it uses less digits than its factorization.

187104008240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55266 (or 55260 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The spelling of 187104008240 in words is "one hundred eighty-seven billion, one hundred four million, eight thousand, two hundred forty".