9659994903936 has 384 divisors, whose sum is σ = 31418240817600. Its totient is φ = 2826624024576.

The previous prime is 9659994903901. The next prime is 9659994903943. The reversal of 9659994903936 is 6393094999569.

It is a happy number.

9659994903936 is a `hidden beast` number, since 9 + 6 + 5 + 9 + 99 + 490 + 3 + 9 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59508450 + ... + 59670558.

Almost surely, 2^{9659994903936} is an apocalyptic number.

9659994903936 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9659994903936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15709120408800).

9659994903936 is an abundant number, since it is smaller than the sum of its proper divisors (21758245913664).

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

9659994903936 is a wasteful number, since it uses less digits than its factorization.

9659994903936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162338 (or 162323 counting only the distinct ones).

The product of its (nonzero) digits is 3443737680, while the sum is 81.

The spelling of 9659994903936 in words is "nine trillion, six hundred fifty-nine billion, nine hundred ninety-four million, nine hundred three thousand, nine hundred thirty-six".