8277886865664 has 252 divisors, whose sum is σ = 26679511025356. Its totient is φ = 2547041366016.

The previous prime is 8277886865629. The next prime is 8277886865683. The reversal of 8277886865664 is 4665686887728.

It can be written as a sum of positive squares in 2 ways, for example, as 1207818584064 + 7070068281600 = 1099008^2 + 2658960^2 .

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 720114 + ... + 4132110.

Almost surely, 2^{8277886865664} 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 8277886865664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13339755512678).

8277886865664 is an abundant number, since it is smaller than the sum of its proper divisors (18401624159692).

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

8277886865664 is an equidigital number, since it uses as much as digits as its factorization.

8277886865664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412044 (or 3412015 counting only the distinct ones).

The product of its digits is 10404495360, while the sum is 81.

The spelling of 8277886865664 in words is "eight trillion, two hundred seventy-seven billion, eight hundred eighty-six million, eight hundred sixty-five thousand, six hundred sixty-four".