7929912680 has 32 divisors (see below), whose sum is σ = 17918901000. Its totient is φ = 3158347776.

The previous prime is 7929912659. The next prime is 7929912707. The reversal of 7929912680 is 862199297.

It can be written as a sum of positive squares in 4 ways, for example, as 4503215236 + 3426697444 = 67106^2 + 58538^2 .

It is a super-2 number, since 2×7929912680² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 416105 + ... + 434744.

Almost surely, 2^7929912680 is an apocalyptic number.

It is an amenable number.

7929912680 is an abundant number, since it is smaller than the sum of its proper divisors (9988988320).

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

7929912680 is a wasteful number, since it uses less digits than its factorization.

7929912680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851093 (or 851089 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 7929912680 is about 89050.0571588812. The cubic root of 7929912680 is about 1994.1422501331.

The spelling of 7929912680 in words is "seven billion, nine hundred twenty-nine million, nine hundred twelve thousand, six hundred eighty".