187745345680 has 40 divisors (see below), whose sum is σ = 436966141752. Its totient is φ = 75019305984.

The previous prime is 187745345651. The next prime is 187745345699. The reversal of 187745345680 is 86543547781.

187745345680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 61274071296 + 126471274384 = 247536^2 + 355628^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 1155039 + ... + 1307518.

Almost surely, 2^187745345680 is an apocalyptic number.

187745345680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187745345680 is an abundant number, since it is smaller than the sum of its proper divisors (249220796072).

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

187745345680 is a wasteful number, since it uses less digits than its factorization.

187745345680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463523 (or 2463517 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 58.

The spelling of 187745345680 in words is "one hundred eighty-seven billion, seven hundred forty-five million, three hundred forty-five thousand, six hundred eighty".