7664391912 has 64 divisors (see below), whose sum is σ = 20199067200. Its totient is φ = 2416780800.

The previous prime is 7664391883. The next prime is 7664391929. The reversal of 7664391912 is 2191934667.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307668 + ... + 331644.

It is an arithmetic number, because the mean of its divisors is an integer number (315610425).

Almost surely, 2^7664391912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7664391912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10099533600).

7664391912 is an abundant number, since it is smaller than the sum of its proper divisors (12534675288).

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

7664391912 is a wasteful number, since it uses less digits than its factorization.

7664391912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24706 (or 24702 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 7664391912 is about 87546.5128488851. The cubic root of 7664391912 is about 1971.6321955426.

The spelling of 7664391912 in words is "seven billion, six hundred sixty-four million, three hundred ninety-one thousand, nine hundred twelve".