8777081664 has 168 divisors, whose sum is σ = 27553737120. Its totient is φ = 2654733312.

The previous prime is 8777081659. The next prime is 8777081671. The reversal of 8777081664 is 4661807778.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8777081664.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 431859 + ... + 451725.

It is an arithmetic number, because the mean of its divisors is an integer number (164010340).

Almost surely, 2^8777081664 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 8777081664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13776868560).

8777081664 is an abundant number, since it is smaller than the sum of its proper divisors (18776655456).

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

8777081664 is a wasteful number, since it uses less digits than its factorization.

8777081664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19957 (or 19944 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The square root of 8777081664 is about 93686.0804175305. The cubic root of 8777081664 is about 2062.7663892175.

The spelling of 8777081664 in words is "eight billion, seven hundred seventy-seven million, eighty-one thousand, six hundred sixty-four".