43650491328 has 224 divisors, whose sum is σ = 132556910400. Its totient is φ = 14077919232.

The previous prime is 43650491323. The next prime is 43650491341. The reversal of 43650491328 is 82319405634.

43650491328 is a `hidden beast` number, since 4 + 3 + 6 + 504 + 9 + 132 + 8 = 666.

It is a Cunningham number, because it is equal to 208927²-1.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43650491323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6682368 + ... + 6688896.

Almost surely, 2^43650491328 is an apocalyptic number.

43650491328 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43650491328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66278455200).

43650491328 is an abundant number, since it is smaller than the sum of its proper divisors (88906419072).

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

43650491328 is a wasteful number, since it uses less digits than its factorization.

43650491328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676 (or 6660 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 43650491328 in words is "forty-three billion, six hundred fifty million, four hundred ninety-one thousand, three hundred twenty-eight".