9967039128 has 24 divisors (see below), whose sum is σ = 26994064500. Its totient is φ = 3322346352.

The previous prime is 9967039099. The next prime is 9967039163. The reversal of 9967039128 is 8219307699.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69215478 + ... + 69215621.

Almost surely, 2^9967039128 is an apocalyptic number.

It is an amenable number.

9967039128 is an abundant number, since it is smaller than the sum of its proper divisors (17027025372).

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

9967039128 is a wasteful number, since it uses less digits than its factorization.

9967039128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138431111 (or 138431104 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 9967039128 is about 99835.0596133442. The cubic root of 9967039128 is about 2152.0650163697.

The spelling of 9967039128 in words is "nine billion, nine hundred sixty-seven million, thirty-nine thousand, one hundred twenty-eight".