43365728640 has 256 divisors, whose sum is σ = 152887734720. Its totient is φ = 10385915904.

The previous prime is 43365728561. The next prime is 43365728657. The reversal of 43365728640 is 4682756334.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 43365728640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 900042 + ... + 946998.

Almost surely, 2^43365728640 is an apocalyptic number.

43365728640 is a gapful number since it is divisible by the number (40) 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 43365728640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76443867360).

43365728640 is an abundant number, since it is smaller than the sum of its proper divisors (109522006080).

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

43365728640 is a wasteful number, since it uses less digits than its factorization.

43365728640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47029 (or 47017 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 43365728640 in words is "forty-three billion, three hundred sixty-five million, seven hundred twenty-eight thousand, six hundred forty".