87066136488 has 128 divisors (see below), whose sum is σ = 233007390720. Its totient is φ = 27060583680.

The previous prime is 87066136459. The next prime is 87066136499. The reversal of 87066136488 is 88463166078.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2820031 + ... + 2850737.

It is an arithmetic number, because the mean of its divisors is an integer number (1820370240).

Almost surely, 2^87066136488 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 87066136488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116503695360).

87066136488 is an abundant number, since it is smaller than the sum of its proper divisors (145941254232).

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

87066136488 is a wasteful number, since it uses less digits than its factorization.

87066136488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30887 (or 30883 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 87066136488 in words is "eighty-seven billion, sixty-six million, one hundred thirty-six thousand, four hundred eighty-eight".