187048137640 has 128 divisors (see below), whose sum is σ = 522732672000. Its totient is φ = 58654430208.

The previous prime is 187048137509. The next prime is 187048137667. The reversal of 187048137640 is 46731840781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161041 + ... + 632479.

It is an arithmetic number, because the mean of its divisors is an integer number (4083849000).

Almost surely, 2^187048137640 is an apocalyptic number.

187048137640 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 187048137640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261366336000).

187048137640 is an abundant number, since it is smaller than the sum of its proper divisors (335684534360).

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

187048137640 is a wasteful number, since it uses less digits than its factorization.

187048137640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471579 (or 471575 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 187048137640 in words is "one hundred eighty-seven billion, forty-eight million, one hundred thirty-seven thousand, six hundred forty".