7891533012000 has 768 divisors, whose sum is σ = 29964480698880. Its totient is φ = 1797175296000.

The previous prime is 7891533011987. The next prime is 7891533012043. The reversal of 7891533012000 is 2103351987.

It is a self number, because there is not a number n which added to its sum of digits gives 7891533012000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 141608142 + ... + 141663858.

It is an arithmetic number, because the mean of its divisors is an integer number (39016250910).

Almost surely, 2^{7891533012000} 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 7891533012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14982240349440).

7891533012000 is an abundant number, since it is smaller than the sum of its proper divisors (22072947686880).

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

7891533012000 is a wasteful number, since it uses less digits than its factorization.

7891533012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55822 (or 55804 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

Adding to 7891533012000 its reverse (2103351987), we get a palindrome (7893636363987).

The spelling of 7891533012000 in words is "seven trillion, eight hundred ninety-one billion, five hundred thirty-three million, twelve thousand".