7848721756428 has 192 divisors, whose sum is σ = 23362699788288. Its totient is φ = 1999039472640.

The previous prime is 7848721756423. The next prime is 7848721756453. The reversal of 7848721756428 is 8246571278487.

It is not an unprimeable number, because it can be changed into a prime (7848721756423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194425 + ... + 3966767.

It is an arithmetic number, because the mean of its divisors is an integer number (121680728064).

Almost surely, 2^{7848721756428} 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 7848721756428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11681349894144).

7848721756428 is an abundant number, since it is smaller than the sum of its proper divisors (15513978031860).

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

7848721756428 is a wasteful number, since it uses less digits than its factorization.

7848721756428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772452 (or 3772450 counting only the distinct ones).

The product of its digits is 337182720, while the sum is 69.

The spelling of 7848721756428 in words is "seven trillion, eight hundred forty-eight billion, seven hundred twenty-one million, seven hundred fifty-six thousand, four hundred twenty-eight".