50009999424 has 448 divisors, whose sum is σ = 175747387392. Its totient is φ = 12150374400.

The previous prime is 50009999387. The next prime is 50009999437. The reversal of 50009999424 is 42499990005.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48505789 + ... + 48506819.

Almost surely, 2^50009999424 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 50009999424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87873693696).

50009999424 is an abundant number, since it is smaller than the sum of its proper divisors (125737387968).

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

50009999424 is a wasteful number, since it uses less digits than its factorization.

50009999424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1264 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 50009999424 in words is "fifty billion, nine million, nine hundred ninety-nine thousand, four hundred twenty-four".