87109444500 has 144 divisors (see below), whose sum is σ = 274676980032. Its totient is φ = 21442262400.

The previous prime is 87109444417. The next prime is 87109444501. The reversal of 87109444500 is 544490178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87109444501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81687 + ... + 425313.

It is an arithmetic number, because the mean of its divisors is an integer number (1907479028).

Almost surely, 2^87109444500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87109444500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137338490016).

87109444500 is an abundant number, since it is smaller than the sum of its proper divisors (187567535532).

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

87109444500 is a wasteful number, since it uses less digits than its factorization.

87109444500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343675 (or 343650 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 87109444500 in words is "eighty-seven billion, one hundred nine million, four hundred forty-four thousand, five hundred".