43546942149 has 4 divisors (see below), whose sum is σ = 58062589536. Its totient is φ = 29031294764.

The previous prime is 43546942147. The next prime is 43546942163. The reversal of 43546942149 is 94124964534.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43546942149 - 2¹ = 43546942147 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43546942147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7257823689 + ... + 7257823694.

It is an arithmetic number, because the mean of its divisors is an integer number (14515647384).

Almost surely, 2^43546942149 is an apocalyptic number.

It is an amenable number.

43546942149 is a deficient number, since it is larger than the sum of its proper divisors (14515647387).

43546942149 is a wasteful number, since it uses less digits than its factorization.

43546942149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14515647386.

The product of its digits is 3732480, while the sum is 51.

The spelling of 43546942149 in words is "forty-three billion, five hundred forty-six million, nine hundred forty-two thousand, one hundred forty-nine".