9662720875920 has 960 divisors, whose sum is σ = 39112936611840. Its totient is φ = 2171370240000.

The previous prime is 9662720875903. The next prime is 9662720875933. The reversal of 9662720875920 is 295780272669.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2698328530 + ... + 2698332110.

It is an arithmetic number, because the mean of its divisors is an integer number (40742642304).

Almost surely, 2^{9662720875920} is an apocalyptic number.

9662720875920 is a gapful number since it is divisible by the number (90) 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 9662720875920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19556468305920).

9662720875920 is an abundant number, since it is smaller than the sum of its proper divisors (29450215735920).

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

9662720875920 is a wasteful number, since it uses less digits than its factorization.

9662720875920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946 (or 3928 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 9662720875920 in words is "nine trillion, six hundred sixty-two billion, seven hundred twenty million, eight hundred seventy-five thousand, nine hundred twenty".