9979567652 has 12 divisors (see below), whose sum is σ = 17579901696. Its totient is φ = 4956738600.

The previous prime is 9979567651. The next prime is 9979567679. The reversal of 9979567652 is 2567659799.

It is not an unprimeable number, because it can be changed into a prime (9979567651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8260628 + ... + 8261835.

It is an arithmetic number, because the mean of its divisors is an integer number (1464991808).

Almost surely, 2^9979567652 is an apocalyptic number.

It is an amenable number.

9979567652 is a deficient number, since it is larger than the sum of its proper divisors (7600334044).

9979567652 is a wasteful number, since it uses less digits than its factorization.

9979567652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16522618 (or 16522616 counting only the distinct ones).

The product of its digits is 64297800, while the sum is 65.

The square root of 9979567652 is about 99897.7860215130. The cubic root of 9979567652 is about 2152.9663508791.

The spelling of 9979567652 in words is "nine billion, nine hundred seventy-nine million, five hundred sixty-seven thousand, six hundred fifty-two".