43121096149 has 2 divisors, whose sum is σ = 43121096150. Its totient is φ = 43121096148.

The previous prime is 43121096059. The next prime is 43121096167. The reversal of 43121096149 is 94169012134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41463140625 + 1657955524 = 203625^2 + 40718^2 .

It is a cyclic number.

It is not a de Polignac number, because 43121096149 - 2²¹ = 43118998997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43121090149) 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 as a sum of consecutive naturals, namely, 21560548074 + 21560548075.

It is an arithmetic number, because the mean of its divisors is an integer number (21560548075).

Almost surely, 2^43121096149 is an apocalyptic number.

It is an amenable number.

43121096149 is a deficient number, since it is larger than the sum of its proper divisors (1).

43121096149 is an equidigital number, since it uses as much as digits as its factorization.

43121096149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 43121096149 in words is "forty-three billion, one hundred twenty-one million, ninety-six thousand, one hundred forty-nine".