7963217865 has 32 divisors (see below), whose sum is σ = 14163331200. Its totient is φ = 4245099840.

The previous prime is 7963217861. The next prime is 7963217887. The reversal of 7963217865 is 5687123697.

It is not a de Polignac number, because 7963217865 - 2² = 7963217861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7963217861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310170 + ... + 334860.

It is an arithmetic number, because the mean of its divisors is an integer number (442604100).

Almost surely, 2^7963217865 is an apocalyptic number.

It is an amenable number.

7963217865 is a deficient number, since it is larger than the sum of its proper divisors (6200113335).

7963217865 is a wasteful number, since it uses less digits than its factorization.

7963217865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27094 (or 27088 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 7963217865 is about 89236.8638231981. The cubic root of 7963217865 is about 1996.9301123893.

The spelling of 7963217865 in words is "seven billion, nine hundred sixty-three million, two hundred seventeen thousand, eight hundred sixty-five".