9712499999989 has 16 divisors (see below), whose sum is σ = 10091773037632. Its totient is φ = 9340341994368.

The previous prime is 9712499999947. The next prime is 9712499999999. The reversal of 9712499999989 is 9899999942179.

It is a cyclic number.

It is not a de Polignac number, because 9712499999989 - 2³¹ = 9710352516341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9712499999897 and 9712499999906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9712499999999) 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 15 ways as a sum of consecutive naturals, for example, 4896067 + ... + 6587599.

It is an arithmetic number, because the mean of its divisors is an integer number (630735814852).

Almost surely, 2^{9712499999989} is an apocalyptic number.

It is an amenable number.

9712499999989 is a deficient number, since it is larger than the sum of its proper divisors (379273037643).

9712499999989 is a wasteful number, since it uses less digits than its factorization.

9712499999989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693636.

The product of its digits is 19284931008, while the sum is 94.

The spelling of 9712499999989 in words is "nine trillion, seven hundred twelve billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-nine".