7943596645 has 4 divisors (see below), whose sum is σ = 9532315980. Its totient is φ = 6354877312.

The previous prime is 7943596607. The next prime is 7943596657. The reversal of 7943596645 is 5466953497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5466953497 = 79 ⋅69201943.

It can be written as a sum of positive squares in 2 ways, for example, as 3736387876 + 4207208769 = 61126^2 + 64863^2 .

It is a cyclic number.

It is not a de Polignac number, because 7943596645 - 2¹⁵ = 7943563877 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 7943596645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794359660 + ... + 794359669.

It is an arithmetic number, because the mean of its divisors is an integer number (2383078995).

Almost surely, 2^7943596645 is an apocalyptic number.

It is an amenable number.

7943596645 is a deficient number, since it is larger than the sum of its proper divisors (1588719335).

7943596645 is a wasteful number, since it uses less digits than its factorization.

7943596645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588719334.

The product of its digits is 24494400, while the sum is 58.

The square root of 7943596645 is about 89126.8570353516. The cubic root of 7943596645 is about 1995.2886306309.

The spelling of 7943596645 in words is "seven billion, nine hundred forty-three million, five hundred ninety-six thousand, six hundred forty-five".