7779043808 has 48 divisors (see below), whose sum is σ = 16130378880. Its totient is φ = 3685604736.

The previous prime is 7779043801. The next prime is 7779043817. The reversal of 7779043808 is 8083409777.

It is a self number, because there is not a number n which added to its sum of digits gives 7779043808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7779043801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29363 + ... + 128141.

It is an arithmetic number, because the mean of its divisors is an integer number (336049560).

Almost surely, 2^7779043808 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 7779043808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8065189440).

7779043808 is an abundant number, since it is smaller than the sum of its proper divisors (8351335072).

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

7779043808 is a wasteful number, since it uses less digits than its factorization.

7779043808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98919 (or 98911 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 53.

The square root of 7779043808 is about 88198.8877934410. The cubic root of 7779043808 is about 1981.4148143958.

The spelling of 7779043808 in words is "seven billion, seven hundred seventy-nine million, forty-three thousand, eight hundred eight".