49661591844 has 12 divisors (see below), whose sum is σ = 115877047664. Its totient is φ = 16553863944.

The previous prime is 49661591843. The next prime is 49661591849. The reversal of 49661591844 is 44819516694.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (49661591843) 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, 2069232982 + ... + 2069233005.

Almost surely, 2^49661591844 is an apocalyptic number.

It is an amenable number.

49661591844 is an abundant number, since it is smaller than the sum of its proper divisors (66215455820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49661591844 is a wasteful number, since it uses less digits than its factorization.

49661591844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138465994 (or 4138465992 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The spelling of 49661591844 in words is "forty-nine billion, six hundred sixty-one million, five hundred ninety-one thousand, eight hundred forty-four".