7943488656 has 40 divisors (see below), whose sum is σ = 21412885440. Its totient is φ = 2532706176.

The previous prime is 7943488643. The next prime is 7943488661. The reversal of 7943488656 is 6568843497.

It is a self number, because there is not a number n which added to its sum of digits gives 7943488656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3596491 + ... + 3598698.

It is an arithmetic number, because the mean of its divisors is an integer number (535322136).

Almost surely, 2^7943488656 is an apocalyptic number.

It is an amenable number.

7943488656 is an abundant number, since it is smaller than the sum of its proper divisors (13469396784).

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

7943488656 is a wasteful number, since it uses less digits than its factorization.

7943488656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195223 (or 7195217 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 60.

The square root of 7943488656 is about 89126.2512170236. The cubic root of 7943488656 is about 1995.2795889583.

The spelling of 7943488656 in words is "seven billion, nine hundred forty-three million, four hundred eighty-eight thousand, six hundred fifty-six".