9967539540 has 96 divisors (see below), whose sum is σ = 32996033280. Its totient is φ = 2199730176.

The previous prime is 9967539521. The next prime is 9967539577. The reversal of 9967539540 is 459357699.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 396997 + ... + 421356.

It is an arithmetic number, because the mean of its divisors is an integer number (343708680).

Almost surely, 2^9967539540 is an apocalyptic number.

It is an amenable number.

9967539540 is an abundant number, since it is smaller than the sum of its proper divisors (23028493740).

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

9967539540 is a wasteful number, since it uses less digits than its factorization.

9967539540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818401 (or 818399 counting only the distinct ones).

The product of its (nonzero) digits is 9185400, while the sum is 57.

The square root of 9967539540 is about 99837.5657756137. The cubic root of 9967539540 is about 2152.1010317842.

The spelling of 9967539540 in words is "nine billion, nine hundred sixty-seven million, five hundred thirty-nine thousand, five hundred forty".