187134780020 has 48 divisors (see below), whose sum is σ = 394787856960. Its totient is φ = 74510931456.

The previous prime is 187134780013. The next prime is 187134780037. The reversal of 187134780020 is 20087431781.

It is a self number, because there is not a number n which added to its sum of digits gives 187134780020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3811991 + ... + 3860769.

It is an arithmetic number, because the mean of its divisors is an integer number (8224747020).

Almost surely, 2^187134780020 is an apocalyptic number.

187134780020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187134780020 is an abundant number, since it is smaller than the sum of its proper divisors (207653076940).

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

187134780020 is a wasteful number, since it uses less digits than its factorization.

187134780020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49664 (or 49662 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The spelling of 187134780020 in words is "one hundred eighty-seven billion, one hundred thirty-four million, seven hundred eighty thousand, twenty".