9979744898760 has 768 divisors, whose sum is σ = 40486761100800. Its totient is φ = 1944607408128.

The previous prime is 9979744898749. The next prime is 9979744898777. The reversal of 9979744898760 is 678984479799.

It is a Harshad number since it is a multiple of its sum of digits (87).

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, 50887612 + ... + 51083348.

It is an arithmetic number, because the mean of its divisors is an integer number (52717136850).

Almost surely, 2^{9979744898760} 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 9979744898760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20243380550400).

9979744898760 is an abundant number, since it is smaller than the sum of its proper divisors (30507016202040).

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

9979744898760 is a wasteful number, since it uses less digits than its factorization.

9979744898760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195830 (or 195819 counting only the distinct ones).

The product of its (nonzero) digits is 13826598912, while the sum is 87.

The spelling of 9979744898760 in words is "nine trillion, nine hundred seventy-nine billion, seven hundred forty-four million, eight hundred ninety-eight thousand, seven hundred sixty".