9868645273599 has 144 divisors (see below), whose sum is σ = 17758736760960. Its totient is φ = 5249558160000.

The previous prime is 9868645273589. The next prime is 9868645273601. The reversal of 9868645273599 is 9953725468689.

9868645273599 is a `hidden beast` number, since 9 + 8 + 6 + 8 + 6 + 452 + 73 + 5 + 99 = 666.

It is a Cunningham number, because it is equal to 3141440²-1.

It is not a de Polignac number, because 9868645273599 - 2⁵ = 9868645273567 is a prime.

It is a super-2 number, since 2×9868645273599² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9868645273589) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 537176884 + ... + 537195254.

It is an arithmetic number, because the mean of its divisors is an integer number (123324560840).

Almost surely, 2^{9868645273599} is an apocalyptic number.

9868645273599 is a deficient number, since it is larger than the sum of its proper divisors (7890091487361).

9868645273599 is a wasteful number, since it uses less digits than its factorization.

9868645273599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19522 (or 19512 counting only the distinct ones).

The product of its digits is 7054387200, while the sum is 81.

The spelling of 9868645273599 in words is "nine trillion, eight hundred sixty-eight billion, six hundred forty-five million, two hundred seventy-three thousand, five hundred ninety-nine".