43128518612887 has 32 divisors (see below), whose sum is σ = 48418822932480. Its totient is φ = 38204374940160.

The previous prime is 43128518612867. The next prime is 43128518612929. The reversal of 43128518612887 is 78821681582134.

It is a cyclic number.

It is not a de Polignac number, because 43128518612887 - 2³⁵ = 43094158874519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43128518612867) 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, 6667812 + ... + 11433142.

It is an arithmetic number, because the mean of its divisors is an integer number (1513088216640).

Almost surely, 2^{43128518612887} is an apocalyptic number.

43128518612887 is a deficient number, since it is larger than the sum of its proper divisors (5290304319593).

43128518612887 is a wasteful number, since it uses less digits than its factorization.

43128518612887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765743.

The product of its digits is 41287680, while the sum is 64.

The spelling of 43128518612887 in words is "forty-three trillion, one hundred twenty-eight billion, five hundred eighteen million, six hundred twelve thousand, eight hundred eighty-seven".