9965522053616 has 80 divisors (see below), whose sum is σ = 20096909965440. Its totient is φ = 4781427920640.

The previous prime is 9965522053481. The next prime is 9965522053651. The reversal of 9965522053616 is 6163502255699.

It is a super-2 number, since 2×9965522053616² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49328651 + ... + 49530261.

It is an arithmetic number, because the mean of its divisors is an integer number (251211374568).

Almost surely, 2^{9965522053616} 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 9965522053616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10048454982720).

9965522053616 is an abundant number, since it is smaller than the sum of its proper divisors (10131387911824).

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

9965522053616 is a wasteful number, since it uses less digits than its factorization.

9965522053616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202302 (or 202296 counting only the distinct ones).

The product of its (nonzero) digits is 26244000, while the sum is 59.

The spelling of 9965522053616 in words is "nine trillion, nine hundred sixty-five billion, five hundred twenty-two million, fifty-three thousand, six hundred sixteen".