9959165970 has 64 divisors (see below), whose sum is σ = 27095402880. Its totient is φ = 2322459648.

The previous prime is 9959165959. The next prime is 9959165971. The reversal of 9959165970 is 795619599.

It is not an unprimeable number, because it can be changed into a prime (9959165971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 664599 + ... + 679418.

It is an arithmetic number, because the mean of its divisors is an integer number (423365670).

Almost surely, 2^9959165970 is an apocalyptic number.

9959165970 is an abundant number, since it is smaller than the sum of its proper divisors (17136236910).

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

9959165970 is a wasteful number, since it uses less digits than its factorization.

9959165970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344059.

The product of its (nonzero) digits is 6889050, while the sum is 60.

The square root of 9959165970 is about 99795.6209961139. The cubic root of 9959165970 is about 2151.4982144343.

It can be divided in two parts, 99591 and 65970, that added together give a palindrome (165561).

The spelling of 9959165970 in words is "nine billion, nine hundred fifty-nine million, one hundred sixty-five thousand, nine hundred seventy".