5477777816 has 48 divisors (see below), whose sum is σ = 11995520040. Its totient is φ = 2338224000.

The previous prime is 5477777777. The next prime is 5477777867. The reversal of 5477777816 is 6187777745.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70556 + ... + 126228.

Almost surely, 2^5477777816 is an apocalyptic number.

5477777816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5477777816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5997760020).

5477777816 is an abundant number, since it is smaller than the sum of its proper divisors (6517742224).

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

5477777816 is a wasteful number, since it uses less digits than its factorization.

5477777816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55944 (or 55933 counting only the distinct ones).

The product of its digits is 16134720, while the sum is 59.

The square root of 5477777816 is about 74012.0112954647. The cubic root of 5477777816 is about 1762.7936238071.

The spelling of 5477777816 in words is "five billion, four hundred seventy-seven million, seven hundred seventy-seven thousand, eight hundred sixteen".