9971685280 has 24 divisors (see below), whose sum is σ = 23558106852. Its totient is φ = 3988674048.

The previous prime is 9971685221. The next prime is 9971685287. The reversal of 9971685280 is 825861799.

9971685280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9970421904 + 1263376 = 99852^2 + 1124^2 .

It is not an unprimeable number, because it can be changed into a prime (9971685287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31161357 + ... + 31161676.

Almost surely, 2^9971685280 is an apocalyptic number.

It is an amenable number.

9971685280 is an abundant number, since it is smaller than the sum of its proper divisors (13586421572).

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

9971685280 is a wasteful number, since it uses less digits than its factorization.

9971685280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62323048 (or 62323040 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 55.

The square root of 9971685280 is about 99858.3260424488. The cubic root of 9971685280 is about 2152.3993606619.

The spelling of 9971685280 in words is "nine billion, nine hundred seventy-one million, six hundred eighty-five thousand, two hundred eighty".