7921679712 has 24 divisors (see below), whose sum is σ = 20794409496. Its totient is φ = 2640559872.

The previous prime is 7921679653. The next prime is 7921679743. The reversal of 7921679712 is 2179761297.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41258653 + ... + 41258844.

It is an arithmetic number, because the mean of its divisors is an integer number (866433729).

Almost surely, 2^7921679712 is an apocalyptic number.

It is an amenable number.

7921679712 is an abundant number, since it is smaller than the sum of its proper divisors (12872729784).

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

7921679712 is a wasteful number, since it uses less digits than its factorization.

7921679712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82517510 (or 82517502 counting only the distinct ones).

The product of its digits is 666792, while the sum is 51.

The square root of 7921679712 is about 89003.8185248251. The cubic root of 7921679712 is about 1993.4518938838.

The spelling of 7921679712 in words is "seven billion, nine hundred twenty-one million, six hundred seventy-nine thousand, seven hundred twelve".