49439981261444 has 12 divisors (see below), whose sum is σ = 86735727727068. Its totient is φ = 24658344768000.

The previous prime is 49439981261443. The next prime is 49439981261521. The reversal of 49439981261444 is 44416218993494.

It can be written as a sum of positive squares in 2 ways, for example, as 48903615444544 + 536365816900 = 6993112^2 + 732370^2 .

It is not an unprimeable number, because it can be changed into a prime (49439981261443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15411463877 + ... + 15411467084.

It is an arithmetic number, because the mean of its divisors is an integer number (7227977310589).

Almost surely, 2^{49439981261444} is an apocalyptic number.

It is an amenable number.

49439981261444 is a deficient number, since it is larger than the sum of its proper divisors (37295746465624).

49439981261444 is a wasteful number, since it uses less digits than its factorization.

49439981261444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30822931366 (or 30822931364 counting only the distinct ones).

The product of its digits is 214990848, while the sum is 68.

The spelling of 49439981261444 in words is "forty-nine trillion, four hundred thirty-nine billion, nine hundred eighty-one million, two hundred sixty-one thousand, four hundred forty-four".