7644286809852 has 384 divisors, whose sum is σ = 23073008910336. Its totient is φ = 1911656160000.

The previous prime is 7644286809811. The next prime is 7644286809857. The reversal of 7644286809852 is 2589086824467.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7644286809857) 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, 6209818077 + ... + 6209819307.

It is an arithmetic number, because the mean of its divisors is an integer number (60085960704).

Almost surely, 2^{7644286809852} 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 7644286809852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11536504455168).

7644286809852 is an abundant number, since it is smaller than the sum of its proper divisors (15428722100484).

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

7644286809852 is a wasteful number, since it uses less digits than its factorization.

7644286809852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221 (or 2219 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 69.

The spelling of 7644286809852 in words is "seven trillion, six hundred forty-four billion, two hundred eighty-six million, eight hundred nine thousand, eight hundred fifty-two".