50405508728 has 24 divisors (see below), whose sum is σ = 99746363880. Its totient is φ = 23876292240.

The previous prime is 50405508707. The next prime is 50405508767. The reversal of 50405508728 is 82780550405.

It is a super-3 number, since 3×50405508728³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8723828 + ... + 8729603.

It is an arithmetic number, because the mean of its divisors is an integer number (4156098495).

Almost surely, 2^50405508728 is an apocalyptic number.

It is an amenable number.

50405508728 is a deficient number, since it is larger than the sum of its proper divisors (49340855152).

50405508728 is a wasteful number, since it uses less digits than its factorization.

50405508728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17453475 (or 17453452 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 44.

The spelling of 50405508728 in words is "fifty billion, four hundred five million, five hundred eight thousand, seven hundred twenty-eight".