8856397777344 has 840 divisors, whose sum is σ = 27536476125312. Its totient is φ = 2510089021440.

The previous prime is 8856397777313. The next prime is 8856397777477. The reversal of 8856397777344 is 4437777936588.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a self number, because there is not a number n which added to its sum of digits gives 8856397777344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 124737996829 + ... + 124737996899.

Almost surely, 2^{8856397777344} 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 8856397777344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13768238062656).

8856397777344 is an abundant number, since it is smaller than the sum of its proper divisors (18680078347968).

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

8856397777344 is an equidigital number, since it uses as much as digits as its factorization.

8856397777344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 155 counting only the distinct ones).

The product of its digits is 5974456320, while the sum is 78.

The spelling of 8856397777344 in words is "eight trillion, eight hundred fifty-six billion, three hundred ninety-seven million, seven hundred seventy-seven thousand, three hundred forty-four".