50191840440 has 192 divisors, whose sum is σ = 189587174400. Its totient is φ = 11277939456.

The previous prime is 50191840373. The next prime is 50191840483. The reversal of 50191840440 is 4404819105.

50191840440 is a `hidden beast` number, since 50 + 1 + 91 + 84 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 50191840395 and 50191840404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20112 + ... + 317471.

It is an arithmetic number, because the mean of its divisors is an integer number (987433200).

Almost surely, 2^50191840440 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 50191840440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94793587200).

50191840440 is an abundant number, since it is smaller than the sum of its proper divisors (139395333960).

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

50191840440 is a wasteful number, since it uses less digits than its factorization.

50191840440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337666 (or 337659 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 50191840440 in words is "fifty billion, one hundred ninety-one million, eight hundred forty thousand, four hundred forty".