49243217539 has 4 divisors (see below), whose sum is σ = 49262036824. Its totient is φ = 49224398256.

The previous prime is 49243217537. The next prime is 49243217579. The reversal of 49243217539 is 93571234294.

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 49243217539 - 2¹ = 49243217537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49243217492 and 49243217501.

It is not an unprimeable number, because it can be changed into a prime (49243217537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9405717 + ... + 9410950.

It is an arithmetic number, because the mean of its divisors is an integer number (12315509206).

Almost surely, 2^49243217539 is an apocalyptic number.

49243217539 is a deficient number, since it is larger than the sum of its proper divisors (18819285).

49243217539 is a wasteful number, since it uses less digits than its factorization.

49243217539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18819284.

The product of its digits is 1632960, while the sum is 49.

The spelling of 49243217539 in words is "forty-nine billion, two hundred forty-three million, two hundred seventeen thousand, five hundred thirty-nine".