9846643645944 has 96 divisors (see below), whose sum is σ = 31802824235520. Its totient is φ = 2691008198208.

The previous prime is 9846643645933. The next prime is 9846643645973. The reversal of 9846643645944 is 4495463466489.

9846643645944 is a `hidden beast` number, since 9 + 8 + 4 + 66 + 436 + 45 + 94 + 4 = 666.

It is a super-2 number, since 2×9846643645944² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 424705612 + ... + 424728795.

It is an arithmetic number, because the mean of its divisors is an integer number (331279419120).

Almost surely, 2^{9846643645944} is an apocalyptic number.

It is an amenable number.

9846643645944 is an abundant number, since it is smaller than the sum of its proper divisors (21956180589576).

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

9846643645944 is a wasteful number, since it uses less digits than its factorization.

9846643645944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849434449 (or 849434442 counting only the distinct ones).

The product of its digits is 2149908480, while the sum is 72.

The spelling of 9846643645944 in words is "nine trillion, eight hundred forty-six billion, six hundred forty-three million, six hundred forty-five thousand, nine hundred forty-four".