50013421920 has 1152 divisors, whose sum is σ = 227360286720. Its totient is φ = 10149027840.

The previous prime is 50013421891. The next prime is 50013421933. The reversal of 50013421920 is 2912431005.

50013421920 is a `hidden beast` number, since 500 + 134 + 2 + 1 + 9 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 109438332 + ... + 109438788.

It is an arithmetic number, because the mean of its divisors is an integer number (197361360).

Almost surely, 2^50013421920 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 50013421920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113680143360).

50013421920 is an abundant number, since it is smaller than the sum of its proper divisors (177346864800).

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

50013421920 is a wasteful number, since it uses less digits than its factorization.

50013421920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 50013421920 its reverse (2912431005), we get a palindrome (52925852925).

The spelling of 50013421920 in words is "fifty billion, thirteen million, four hundred twenty-one thousand, nine hundred twenty".