87109408386 has 576 divisors, whose sum is σ = 270543297024. Its totient is φ = 19670999040.

The previous prime is 87109408369. The next prime is 87109408453. The reversal of 87109408386 is 68380490178.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 442179640 + ... + 442179836.

It is an arithmetic number, because the mean of its divisors is an integer number (469693224).

Almost surely, 2^87109408386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87109408386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135271648512).

87109408386 is an abundant number, since it is smaller than the sum of its proper divisors (183433888638).

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

87109408386 is a wasteful number, since it uses less digits than its factorization.

87109408386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 87109408386 in words is "eighty-seven billion, one hundred nine million, four hundred eight thousand, three hundred eighty-six".