9879757686129 has 4 divisors (see below), whose sum is σ = 13173010248176. Its totient is φ = 6586505124084.

The previous prime is 9879757686083. The next prime is 9879757686203. The reversal of 9879757686129 is 9216867579789.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9879757686129 - 2¹² = 9879757682033 is a prime.

It is a super-2 number, since 2×9879757686129² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9879757606129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646626281019 + ... + 1646626281024.

It is an arithmetic number, because the mean of its divisors is an integer number (3293252562044).

Almost surely, 2^{9879757686129} is an apocalyptic number.

It is an amenable number.

9879757686129 is a deficient number, since it is larger than the sum of its proper divisors (3293252562047).

9879757686129 is a wasteful number, since it uses less digits than its factorization.

9879757686129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293252562046.

The product of its digits is 5761082880, while the sum is 84.

The spelling of 9879757686129 in words is "nine trillion, eight hundred seventy-nine billion, seven hundred fifty-seven million, six hundred eighty-six thousand, one hundred twenty-nine".