43040233355121 has 12 divisors (see below), whose sum is σ = 62171922584772. Its totient is φ = 28692244306176.

The previous prime is 43040233355107. The next prime is 43040233355153. The reversal of 43040233355121 is 12155333204034.

43040233355121 is a `hidden beast` number, since 4 + 30 + 4 + 0 + 23 + 33 + 551 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30384348840000 + 12655884515121 = 5512200^2 + 3557511^2 .

It is not a de Polignac number, because 43040233355121 - 2⁵ = 43040233355089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43040233354121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103497396 + ... + 103912421.

It is an arithmetic number, because the mean of its divisors is an integer number (5180993548731).

Almost surely, 2^{43040233355121} is an apocalyptic number.

It is an amenable number.

43040233355121 is a deficient number, since it is larger than the sum of its proper divisors (19131689229651).

43040233355121 is a wasteful number, since it uses less digits than its factorization.

43040233355121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207432880 (or 207432877 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 43040233355121 its reverse (12155333204034), we get a palindrome (55195566559155).

The spelling of 43040233355121 in words is "forty-three trillion, forty billion, two hundred thirty-three million, three hundred fifty-five thousand, one hundred twenty-one".