9956767797504 has 432 divisors, whose sum is σ = 32370950836224. Its totient is φ = 2915982028800.

The previous prime is 9956767797503. The next prime is 9956767797541. The reversal of 9956767797504 is 4057977676599.

It is not an unprimeable number, because it can be changed into a prime (9956767797503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 618309517 + ... + 618325619.

Almost surely, 2^{9956767797504} 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 9956767797504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16185475418112).

9956767797504 is an abundant number, since it is smaller than the sum of its proper divisors (22414183038720).

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

9956767797504 is a wasteful number, since it uses less digits than its factorization.

9956767797504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16954 (or 16937 counting only the distinct ones).

The product of its (nonzero) digits is 6301184400, while the sum is 81.

The spelling of 9956767797504 in words is "nine trillion, nine hundred fifty-six billion, seven hundred sixty-seven million, seven hundred ninety-seven thousand, five hundred four".