9861453139200 has 864 divisors, whose sum is σ = 35410033612800. Its totient is φ = 2402526658560.

The previous prime is 9861453139121. The next prime is 9861453139217. The reversal of 9861453139200 is 29313541689.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14964268471 + ... + 14964269129.

It is an arithmetic number, because the mean of its divisors is an integer number (40983835200).

Almost surely, 2^{9861453139200} 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 9861453139200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17705016806400).

9861453139200 is an abundant number, since it is smaller than the sum of its proper divisors (25548580473600).

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

9861453139200 is a wasteful number, since it uses less digits than its factorization.

9861453139200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 9861453139200 in words is "nine trillion, eight hundred sixty-one billion, four hundred fifty-three million, one hundred thirty-nine thousand, two hundred".