43577109909 has 12 divisors (see below), whose sum is σ = 63098618700. Its totient is φ = 28980373824.

The previous prime is 43577109907. The next prime is 43577109937. The reversal of 43577109909 is 90990177534.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41579288100 + 1997821809 = 203910^2 + 44697^2 .

It is not a de Polignac number, because 43577109909 - 2¹ = 43577109907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43577109907) 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 11 ways as a sum of consecutive naturals, for example, 5915514 + ... + 5922875.

It is an arithmetic number, because the mean of its divisors is an integer number (5258218225).

Almost surely, 2^43577109909 is an apocalyptic number.

It is an amenable number.

43577109909 is a deficient number, since it is larger than the sum of its proper divisors (19521508791).

43577109909 is a wasteful number, since it uses less digits than its factorization.

43577109909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11838804 (or 11838801 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The spelling of 43577109909 in words is "forty-three billion, five hundred seventy-seven million, one hundred nine thousand, nine hundred nine".