8777397056 has 56 divisors (see below), whose sum is σ = 18096478920. Its totient is φ = 4218970112.

The previous prime is 8777397047. The next prime is 8777397119. The reversal of 8777397056 is 6507937778.

It can be written as a sum of positive squares in 4 ways, for example, as 474542656 + 8302854400 = 21784^2 + 91120^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8777396986 and 8777397004.

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 7 ways as a sum of consecutive naturals, for example, 422300 + ... + 442596.

Almost surely, 2^8777397056 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 8777397056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9048239460).

8777397056 is an abundant number, since it is smaller than the sum of its proper divisors (9319081864).

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

8777397056 is a wasteful number, since it uses less digits than its factorization.

8777397056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20571 (or 20561 counting only the distinct ones).

The product of its (nonzero) digits is 15558480, while the sum is 59.

The square root of 8777397056 is about 93687.7636407231. The cubic root of 8777397056 is about 2062.7910964512.

The spelling of 8777397056 in words is "eight billion, seven hundred seventy-seven million, three hundred ninety-seven thousand, fifty-six".