50639868240 has 320 divisors, whose sum is σ = 171445026816. Its totient is φ = 12290697216.

The previous prime is 50639868233. The next prime is 50639868281. The reversal of 50639868240 is 4286893605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89946199 + ... + 89946761.

Almost surely, 2^50639868240 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 50639868240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85722513408).

50639868240 is an abundant number, since it is smaller than the sum of its proper divisors (120805158576).

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

50639868240 is a wasteful number, since it uses less digits than its factorization.

50639868240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 50639868240 in words is "fifty billion, six hundred thirty-nine million, eight hundred sixty-eight thousand, two hundred forty".