7968969872 has 10 divisors (see below), whose sum is σ = 15439879158. Its totient is φ = 3984484928.

The previous prime is 7968969851. The next prime is 7968969887. The reversal of 7968969872 is 2789698697.

It can be written as a sum of positive squares in only one way, i.e., 4492216576 + 3476753296 = 67024^2 + 58964^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7968969796 and 7968969805.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249030293 + ... + 249030324.

Almost surely, 2^7968969872 is an apocalyptic number.

It is an amenable number.

7968969872 is a deficient number, since it is larger than the sum of its proper divisors (7470909286).

7968969872 is a wasteful number, since it uses less digits than its factorization.

7968969872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498060625 (or 498060619 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 71.

The square root of 7968969872 is about 89269.0868778213. The cubic root of 7968969872 is about 1997.4108054824.

The spelling of 7968969872 in words is "seven billion, nine hundred sixty-eight million, nine hundred sixty-nine thousand, eight hundred seventy-two".