7972666986 has 32 divisors (see below), whose sum is σ = 16464729600. Its totient is φ = 2571042240.

The previous prime is 7972666951. The next prime is 7972666993. The reversal of 7972666986 is 6896662797.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1185000 + ... + 1191708.

It is an arithmetic number, because the mean of its divisors is an integer number (514522800).

Almost surely, 2^7972666986 is an apocalyptic number.

7972666986 is an abundant number, since it is smaller than the sum of its proper divisors (8492062614).

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

7972666986 is a wasteful number, since it uses less digits than its factorization.

7972666986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13134.

The product of its digits is 82301184, while the sum is 66.

The square root of 7972666986 is about 89289.7921713339. The cubic root of 7972666986 is about 1997.7196498230.

The spelling of 7972666986 in words is "seven billion, nine hundred seventy-two million, six hundred sixty-six thousand, nine hundred eighty-six".