9966539312 has 20 divisors (see below), whose sum is σ = 19759245000. Its totient is φ = 4867379328.

The previous prime is 9966539311. The next prime is 9966539329. The reversal of 9966539312 is 2139356699.

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 not an unprimeable number, because it can be changed into a prime (9966539311) 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, 7242437 + ... + 7243812.

It is an arithmetic number, because the mean of its divisors is an integer number (987962250).

Almost surely, 2^9966539312 is an apocalyptic number.

It is an amenable number.

9966539312 is a deficient number, since it is larger than the sum of its proper divisors (9792705688).

9966539312 is a wasteful number, since it uses less digits than its factorization.

9966539312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14486300 (or 14486294 counting only the distinct ones).

The product of its digits is 2361960, while the sum is 53.

The square root of 9966539312 is about 99832.5563731592. The cubic root of 9966539312 is about 2152.0290426469.

The spelling of 9966539312 in words is "nine billion, nine hundred sixty-six million, five hundred thirty-nine thousand, three hundred twelve".