50421498840 has 384 divisors, whose sum is σ = 187772981760. Its totient is φ = 12103686144.

The previous prime is 50421498779. The next prime is 50421498847. The reversal of 50421498840 is 4889412405.

50421498840 is a `hidden beast` number, since 504 + 2 + 14 + 98 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50421498847) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3793887 + ... + 3807153.

It is an arithmetic number, because the mean of its divisors is an integer number (488992140).

Almost surely, 2^50421498840 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 50421498840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93886490880).

50421498840 is an abundant number, since it is smaller than the sum of its proper divisors (137351482920).

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

50421498840 is a wasteful number, since it uses less digits than its factorization.

50421498840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13333 (or 13317 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 50421498840 in words is "fifty billion, four hundred twenty-one million, four hundred ninety-eight thousand, eight hundred forty".