7766793216 has 660 divisors, whose sum is σ = 29218665112. Its totient is φ = 2048385024.

The previous prime is 7766793197. The next prime is 7766793233. The reversal of 7766793216 is 6123976677.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 597445626 + ... + 597445638.

Almost surely, 2^7766793216 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 7766793216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14609332556).

7766793216 is an abundant number, since it is smaller than the sum of its proper divisors (21451871896).

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

7766793216 is an frugal number, since it uses more digits than its factorization.

7766793216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 25 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 54.

The square root of 7766793216 is about 88129.4117533982. The cubic root of 7766793216 is about 1980.3741441727.

The spelling of 7766793216 in words is "seven billion, seven hundred sixty-six million, seven hundred ninety-three thousand, two hundred sixteen".