9976891072512 has 896 divisors, whose sum is σ = 33662268057600. Its totient is φ = 2611528335360.

The previous prime is 9976891072409. The next prime is 9976891072523. The reversal of 9976891072512 is 2152701986799.

It is a tau number, because it is divible by the number of its divisors (896).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19834773253 + ... + 19834773755.

It is an arithmetic number, because the mean of its divisors is an integer number (37569495600).

Almost surely, 2^{9976891072512} 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 9976891072512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16831134028800).

9976891072512 is an abundant number, since it is smaller than the sum of its proper divisors (23685376985088).

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

9976891072512 is a wasteful number, since it uses less digits than its factorization.

9976891072512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 66.

The spelling of 9976891072512 in words is "nine trillion, nine hundred seventy-six billion, eight hundred ninety-one million, seventy-two thousand, five hundred twelve".