43997565127728 has 80 divisors (see below), whose sum is σ = 119643591228800. Its totient is φ = 13893841405440.

The previous prime is 43997565127699. The next prime is 43997565127753. The reversal of 43997565127728 is 82772156579934.

It is a self number, because there is not a number n which added to its sum of digits gives 43997565127728.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197072868 + ... + 197295996.

It is an arithmetic number, because the mean of its divisors is an integer number (1495544890360).

Almost surely, 2^{43997565127728} is an apocalyptic number.

43997565127728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

43997565127728 is an abundant number, since it is smaller than the sum of its proper divisors (75646026101072).

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

43997565127728 is a wasteful number, since it uses less digits than its factorization.

43997565127728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439370 (or 439364 counting only the distinct ones).

The product of its digits is 1600300800, while the sum is 75.

The spelling of 43997565127728 in words is "forty-three trillion, nine hundred ninety-seven billion, five hundred sixty-five million, one hundred twenty-seven thousand, seven hundred twenty-eight".