9721373760 has 560 divisors, whose sum is σ = 39919777920. Its totient is φ = 2199674880.

The previous prime is 9721373743. The next prime is 9721373771. The reversal of 9721373760 is 673731279.

It is a tau number, because it is divible by the number of its divisors (560).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 23768436 + ... + 23768844.

Almost surely, 2^9721373760 is an apocalyptic number.

9721373760 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 9721373760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19959888960).

9721373760 is an abundant number, since it is smaller than the sum of its proper divisors (30198404160).

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

9721373760 is a wasteful number, since it uses less digits than its factorization.

9721373760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 333396, while the sum is 45.

The square root of 9721373760 is about 98597.0271357103. The cubic root of 9721373760 is about 2134.2365194752.

The spelling of 9721373760 in words is "nine billion, seven hundred twenty-one million, three hundred seventy-three thousand, seven hundred sixty".