9865794634752 has 352 divisors, whose sum is σ = 30690654624000. Its totient is φ = 2816516161536.

The previous prime is 9865794634727. The next prime is 9865794634763. The reversal of 9865794634752 is 2574364975689.

It is a super-2 number, since 2×9865794634752² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (75) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1636386874 + ... + 1636392902.

Almost surely, 2^{9865794634752} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9865794634752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15345327312000).

9865794634752 is an abundant number, since it is smaller than the sum of its proper divisors (20824859989248).

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

9865794634752 is a wasteful number, since it uses less digits than its factorization.

9865794634752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7626 (or 7594 counting only the distinct ones).

The product of its digits is 2743372800, while the sum is 75.

The spelling of 9865794634752 in words is "nine trillion, eight hundred sixty-five billion, seven hundred ninety-four million, six hundred thirty-four thousand, seven hundred fifty-two".