9980967832836 has 384 divisors, whose sum is σ = 31675277684736. Its totient is φ = 2362004305920.

The previous prime is 9980967832799. The next prime is 9980967832837. The reversal of 9980967832836 is 6382387690899.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is not an unprimeable number, because it can be changed into a prime (9980967832837) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1233280006 + ... + 1233288098.

It is an arithmetic number, because the mean of its divisors is an integer number (82487702304).

Almost surely, 2^{9980967832836} 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 9980967832836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15837638842368).

9980967832836 is an abundant number, since it is smaller than the sum of its proper divisors (21694309851900).

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

9980967832836 is a wasteful number, since it uses less digits than its factorization.

9980967832836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451 (or 9449 counting only the distinct ones).

The product of its (nonzero) digits is 1693052928, while the sum is 78.

The spelling of 9980967832836 in words is "nine trillion, nine hundred eighty billion, nine hundred sixty-seven million, eight hundred thirty-two thousand, eight hundred thirty-six".