7776673440 has 96 divisors (see below), whose sum is σ = 24509278080. Its totient is φ = 2072699904.

The previous prime is 7776673393. The next prime is 7776673441. The reversal of 7776673440 is 443766777.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (7776673441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1416621 + ... + 1422099.

It is an arithmetic number, because the mean of its divisors is an integer number (255304980).

Almost surely, 2^7776673440 is an apocalyptic number.

It is an amenable number.

7776673440 is an abundant number, since it is smaller than the sum of its proper divisors (16732604640).

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

7776673440 is a wasteful number, since it uses less digits than its factorization.

7776673440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8454 (or 8446 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 51.

The square root of 7776673440 is about 88185.4491398666. The cubic root of 7776673440 is about 1981.2135403269.

The spelling of 7776673440 in words is "seven billion, seven hundred seventy-six million, six hundred seventy-three thousand, four hundred forty".