9791520940000 has 240 divisors, whose sum is σ = 25519397316336. Its totient is φ = 3684224000000.

The previous prime is 9791520939961. The next prime is 9791520940007. The reversal of 9791520940000 is 490251979.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9791520940007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 727933275 + ... + 727946725.

Almost surely, 2^{9791520940000} 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 9791520940000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12759698658168).

9791520940000 is an abundant number, since it is smaller than the sum of its proper divisors (15727876376336).

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

9791520940000 is a wasteful number, since it uses less digits than its factorization.

9791520940000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15639 (or 15616 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 9791520940000 in words is "nine trillion, seven hundred ninety-one billion, five hundred twenty million, nine hundred forty thousand".