7043264640 has 96 divisors (see below), whose sum is σ = 24321293100. Its totient is φ = 1878202368.

The previous prime is 7043264639. The next prime is 7043264647. The reversal of 7043264640 is 464623407.

7043264640 is a `hidden beast` number, since 7 + 0 + 4 + 3 + 2 + 6 + 4 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6491202624 + 552062016 = 80568^2 + 23496^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7043264595 and 7043264604.

It is not an unprimeable number, because it can be changed into a prime (7043264647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 605635 + ... + 617154.

Almost surely, 2^7043264640 is an apocalyptic number.

It is an amenable number.

7043264640 is an abundant number, since it is smaller than the sum of its proper divisors (17278028460).

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

7043264640 is a wasteful number, since it uses less digits than its factorization.

7043264640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222814 (or 1222799 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The square root of 7043264640 is about 83924.1600494160. The cubic root of 7043264640 is about 1916.8641519848.

The spelling of 7043264640 in words is "seven billion, forty-three million, two hundred sixty-four thousand, six hundred forty".