87317916840 has 256 divisors, whose sum is σ = 362880000000. Its totient is φ = 18143965440.

The previous prime is 87317916817. The next prime is 87317916853. The reversal of 87317916840 is 4861971378.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 441840 + ... + 608159.

It is an arithmetic number, because the mean of its divisors is an integer number (1417500000).

Almost surely, 2^87317916840 is an apocalyptic number.

It is an amenable number.

87317916840 is an abundant number, since it is smaller than the sum of its proper divisors (275562083160).

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

87317916840 is a wasteful number, since it uses less digits than its factorization.

87317916840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050037 (or 1050027 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 87317916840 in words is "eighty-seven billion, three hundred seventeen million, nine hundred sixteen thousand, eight hundred forty".