43100411909 has 2 divisors, whose sum is σ = 43100411910. Its totient is φ = 43100411908.

The previous prime is 43100411881. The next prime is 43100411951. The reversal of 43100411909 is 90911400134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42620363809 + 480048100 = 206447^2 + 21910^2 .

It is a cyclic number.

It is not a de Polignac number, because 43100411909 - 2¹² = 43100407813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43100411309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21550205954 + 21550205955.

It is an arithmetic number, because the mean of its divisors is an integer number (21550205955).

Almost surely, 2^43100411909 is an apocalyptic number.

It is an amenable number.

43100411909 is a deficient number, since it is larger than the sum of its proper divisors (1).

43100411909 is an equidigital number, since it uses as much as digits as its factorization.

43100411909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 43100411909 in words is "forty-three billion, one hundred million, four hundred eleven thousand, nine hundred nine".