8243901631728 has 80 divisors (see below), whose sum is σ = 27043486844160. Its totient is φ = 2355400465344.

The previous prime is 8243901631727. The next prime is 8243901631753. The reversal of 8243901631728 is 8271361093428.

It is a happy number.

8243901631728 is a `hidden beast` number, since 8 + 24 + 390 + 1 + 63 + 172 + 8 = 666.

It is a super-2 number, since 2×8243901631728² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8243901631723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1363075950 + ... + 1363081997.

It is an arithmetic number, because the mean of its divisors is an integer number (338043585552).

Almost surely, 2^{8243901631728} is an apocalyptic number.

It is an amenable number.

8243901631728 is an abundant number, since it is smaller than the sum of its proper divisors (18799585212432).

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

8243901631728 is a wasteful number, since it uses less digits than its factorization.

8243901631728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726157971 (or 2726157959 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 8243901631728 in words is "eight trillion, two hundred forty-three billion, nine hundred one million, six hundred thirty-one thousand, seven hundred twenty-eight".