43728229481 has 16 divisors (see below), whose sum is σ = 47398216320. Its totient is φ = 40189927680.

The previous prime is 43728229477. The next prime is 43728229499. The reversal of 43728229481 is 18492282734.

It is a cyclic number.

It is not a de Polignac number, because 43728229481 - 2² = 43728229477 is a prime.

It is a super-2 number, since 2×43728229481² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43728229981) 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 in 15 ways as a sum of consecutive naturals, for example, 7541 + ... + 295826.

It is an arithmetic number, because the mean of its divisors is an integer number (2962388520).

Almost surely, 2^43728229481 is an apocalyptic number.

It is an amenable number.

43728229481 is a deficient number, since it is larger than the sum of its proper divisors (3669986839).

43728229481 is a wasteful number, since it uses less digits than its factorization.

43728229481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303584.

The product of its digits is 1548288, while the sum is 50.

The spelling of 43728229481 in words is "forty-three billion, seven hundred twenty-eight million, two hundred twenty-nine thousand, four hundred eighty-one".