8464781595816 has 768 divisors, whose sum is σ = 29288407948800. Its totient is φ = 2161840472064.

The previous prime is 8464781595799. The next prime is 8464781595877. The reversal of 8464781595816 is 6185951874648.

It is a happy number.

8464781595816 is a `hidden beast` number, since 8 + 46 + 478 + 1 + 59 + 58 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 12577684056 + ... + 12577684728.

It is an arithmetic number, because the mean of its divisors is an integer number (38135947850).

Almost surely, 2^{8464781595816} 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 8464781595816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14644203974400).

8464781595816 is an abundant number, since it is smaller than the sum of its proper divisors (20823626352984).

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

8464781595816 is a wasteful number, since it uses less digits than its factorization.

8464781595816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1042 counting only the distinct ones).

The product of its digits is 464486400, while the sum is 72.

The spelling of 8464781595816 in words is "eight trillion, four hundred sixty-four billion, seven hundred eighty-one million, five hundred ninety-five thousand, eight hundred sixteen".