9920105650660 has 48 divisors (see below), whose sum is σ = 20844241367040. Its totient is φ = 3965753416320.

The previous prime is 9920105650657. The next prime is 9920105650667. The reversal of 9920105650660 is 660565010299.

9920105650660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9920105650660² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9920105650667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375307645 + ... + 375334075.

It is an arithmetic number, because the mean of its divisors is an integer number (434255028480).

Almost surely, 2^{9920105650660} is an apocalyptic number.

It is an amenable number.

9920105650660 is an abundant number, since it is smaller than the sum of its proper divisors (10924135716380).

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

9920105650660 is a wasteful number, since it uses less digits than its factorization.

9920105650660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36556 (or 36554 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 49.

The spelling of 9920105650660 in words is "nine trillion, nine hundred twenty billion, one hundred five million, six hundred fifty thousand, six hundred sixty".