43205351149 has 2 divisors, whose sum is σ = 43205351150. Its totient is φ = 43205351148.

The previous prime is 43205351143. The next prime is 43205351153. The reversal of 43205351149 is 94115350234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43162971049 + 42380100 = 207757^2 + 6510^2 .

It is a cyclic number.

It is not a de Polignac number, because 43205351149 - 2¹¹ = 43205349101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43205351143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21602675574 + 21602675575.

It is an arithmetic number, because the mean of its divisors is an integer number (21602675575).

Almost surely, 2^43205351149 is an apocalyptic number.

It is an amenable number.

43205351149 is a deficient number, since it is larger than the sum of its proper divisors (1).

43205351149 is an equidigital number, since it uses as much as digits as its factorization.

43205351149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 43205351149 in words is "forty-three billion, two hundred five million, three hundred fifty-one thousand, one hundred forty-nine".