43230128877 has 24 divisors (see below), whose sum is σ = 68515685784. Its totient is φ = 26101206144.

The previous prime is 43230128861. The next prime is 43230128899. The reversal of 43230128877 is 77882103234.

It can be written as a sum of positive squares in 4 ways, for example, as 2415624201 + 40814504676 = 49149^2 + 202026^2 .

It is not a de Polignac number, because 43230128877 - 2⁴ = 43230128861 is a prime.

It is a super-2 number, since 2×43230128877² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43230128827) 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 23 ways as a sum of consecutive naturals, for example, 3479538 + ... + 3491939.

It is an arithmetic number, because the mean of its divisors is an integer number (2854820241).

Almost surely, 2^43230128877 is an apocalyptic number.

It is an amenable number.

43230128877 is a deficient number, since it is larger than the sum of its proper divisors (25285556907).

43230128877 is a wasteful number, since it uses less digits than its factorization.

43230128877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6971549 (or 6971546 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 43230128877 in words is "forty-three billion, two hundred thirty million, one hundred twenty-eight thousand, eight hundred seventy-seven".