87716947880 has 64 divisors (see below), whose sum is σ = 201914173440. Its totient is φ = 34280312832.

The previous prime is 87716947861. The next prime is 87716947891. The reversal of 87716947880 is 8874961778.

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, 1044329 + ... + 1125191.

It is an arithmetic number, because the mean of its divisors is an integer number (3154908960).

Almost surely, 2^87716947880 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 87716947880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100957086720).

87716947880 is an abundant number, since it is smaller than the sum of its proper divisors (114197225560).

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

87716947880 is a wasteful number, since it uses less digits than its factorization.

87716947880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81498 (or 81494 counting only the distinct ones).

The product of its (nonzero) digits is 37933056, while the sum is 65.

The spelling of 87716947880 in words is "eighty-seven billion, seven hundred sixteen million, nine hundred forty-seven thousand, eight hundred eighty".