7721323372404 has 36 divisors (see below), whose sum is σ = 19521326610240. Its totient is φ = 2573308043280.

The previous prime is 7721323372391. The next prime is 7721323372409. The reversal of 7721323372404 is 4042733231277.

It is a happy number.

7721323372404 is a `hidden beast` number, since 7 + 7 + 2 + 1 + 3 + 233 + 7 + 2 + 404 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 7721323372404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7721323372409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19232482 + ... + 19629849.

Almost surely, 2^{7721323372404} is an apocalyptic number.

It is an amenable number.

7721323372404 is an abundant number, since it is smaller than the sum of its proper divisors (11800003237836).

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

7721323372404 is a wasteful number, since it uses less digits than its factorization.

7721323372404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38867860 (or 38867855 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 45.

The spelling of 7721323372404 in words is "seven trillion, seven hundred twenty-one billion, three hundred twenty-three million, three hundred seventy-two thousand, four hundred four".