49439981261443 has 2 divisors, whose sum is σ = 49439981261444. Its totient is φ = 49439981261442.

The previous prime is 49439981261431. The next prime is 49439981261521. The reversal of 49439981261443 is 34416218993494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49439981261443 - 2²⁵ = 49439947707011 is a prime.

It is not a weakly prime, because it can be changed into another prime (49439981261543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24719990630721 + 24719990630722.

It is an arithmetic number, because the mean of its divisors is an integer number (24719990630722).

Almost surely, 2^{49439981261443} is an apocalyptic number.

49439981261443 is a deficient number, since it is larger than the sum of its proper divisors (1).

49439981261443 is an equidigital number, since it uses as much as digits as its factorization.

49439981261443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161243136, while the sum is 67.

The spelling of 49439981261443 in words is "forty-nine trillion, four hundred thirty-nine billion, nine hundred eighty-one million, two hundred sixty-one thousand, four hundred forty-three".