43980725428 has 6 divisors (see below), whose sum is σ = 76966269506.
Its totient is φ = 21990362712.
The previous prime is 43980725423. The next prime is 43980725447. The reversal of 43980725428 is 82452708934.
It can be written as a sum of positive squares in only one way, i.e., 40815312784 + 3165412644 = 202028^2 + 56262^2
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (43980725423) 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 as a sum of consecutive naturals, namely, 5497590675 + ... + 5497590682.
Almost surely, 243980725428 is an apocalyptic number.
It is an amenable number.
43980725428 is a deficient number, since it is larger than the sum of its proper divisors (32985544078).
43980725428 is a wasteful number, since it uses less digits than its factorization.
43980725428 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10995181361 (or 10995181359 counting only the distinct ones).
The product of its (nonzero) digits is 3870720, while the sum is 52.
The spelling of 43980725428 in words is "forty-three billion, nine hundred eighty million, seven hundred twenty-five thousand, four hundred twenty-eight".