87186516480 has 640 divisors, whose sum is σ = 355622952960. Its totient is φ = 19833569280.

The previous prime is 87186516451. The next prime is 87186516623. The reversal of 87186516480 is 8461568178.

It is a happy number.

87186516480 is a `hidden beast` number, since 8 + 7 + 1 + 86 + 516 + 48 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 177569035 + ... + 177569525.

It is an arithmetic number, because the mean of its divisors is an integer number (555660864).

Almost surely, 2^87186516480 is an apocalyptic number.

87186516480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87186516480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177811476480).

87186516480 is an abundant number, since it is smaller than the sum of its proper divisors (268436436480).

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

87186516480 is a wasteful number, since it uses less digits than its factorization.

87186516480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 87186516480 in words is "eighty-seven billion, one hundred eighty-six million, five hundred sixteen thousand, four hundred eighty".