7718040416 has 48 divisors (see below), whose sum is σ = 15604375248. Its totient is φ = 3755673600.

The previous prime is 7718040397. The next prime is 7718040427. The reversal of 7718040416 is 6140408177.

It is a self number, because there is not a number n which added to its sum of digits gives 7718040416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376676 + ... + 396636.

It is an arithmetic number, because the mean of its divisors is an integer number (325091151).

Almost surely, 2^7718040416 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 7718040416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7802187624).

7718040416 is an abundant number, since it is smaller than the sum of its proper divisors (7886334832).

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

7718040416 is a wasteful number, since it uses less digits than its factorization.

7718040416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20295 (or 20287 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 7718040416 is about 87852.3785449205. The cubic root of 7718040416 is about 1976.2217866417.

The spelling of 7718040416 in words is "seven billion, seven hundred eighteen million, forty thousand, four hundred sixteen".