49686566221824 has 384 divisors, whose sum is σ = 152461754565120. Its totient is φ = 14095836905472.

The previous prime is 49686566221801. The next prime is 49686566221931. The reversal of 49686566221824 is 42812266568694.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4431151642 + ... + 4431162854.

It is an arithmetic number, because the mean of its divisors is an integer number (397035819180).

Almost surely, 2^{49686566221824} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49686566221824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76230877282560).

49686566221824 is an abundant number, since it is smaller than the sum of its proper divisors (102775188343296).

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

49686566221824 is a wasteful number, since it uses less digits than its factorization.

49686566221824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11965 (or 11945 counting only the distinct ones).

The product of its digits is 477757440, while the sum is 69.

The spelling of 49686566221824 in words is "forty-nine trillion, six hundred eighty-six billion, five hundred sixty-six million, two hundred twenty-one thousand, eight hundred twenty-four".