43149218898239 has 4 divisors (see below), whose sum is σ = 43149475978656. Its totient is φ = 43148961817824.

The previous prime is 43149218898229. The next prime is 43149218898391. The reversal of 43149218898239 is 93289881294134.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43149218898239 - 2⁴⁰ = 42049707270463 is a prime.

It is a super-2 number, since 2×43149218898239² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43149218898229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128288279 + ... + 128624184.

It is an arithmetic number, because the mean of its divisors is an integer number (10787368994664).

Almost surely, 2^{43149218898239} is an apocalyptic number.

43149218898239 is a deficient number, since it is larger than the sum of its proper divisors (257080417).

43149218898239 is a wasteful number, since it uses less digits than its factorization.

43149218898239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257080416.

The product of its digits is 214990848, while the sum is 71.

The spelling of 43149218898239 in words is "forty-three trillion, one hundred forty-nine billion, two hundred eighteen million, eight hundred ninety-eight thousand, two hundred thirty-nine".