50421440520 has 576 divisors, whose sum is σ = 191328096960. Its totient is φ = 11927139840.

The previous prime is 50421440473. The next prime is 50421440579. The reversal of 50421440520 is 2504412405.

50421440520 is a `hidden beast` number, since 50 + 42 + 14 + 40 + 520 = 666.

It is a super-2 number, since 2×50421440520² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 50572662 + ... + 50573658.

It is an arithmetic number, because the mean of its divisors is an integer number (332166835).

Almost surely, 2^50421440520 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 50421440520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95664048480).

50421440520 is an abundant number, since it is smaller than the sum of its proper divisors (140906656440).

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

50421440520 is a wasteful number, since it uses less digits than its factorization.

50421440520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 50421440520 its reverse (2504412405), we get a palindrome (52925852925).

The spelling of 50421440520 in words is "fifty billion, four hundred twenty-one million, four hundred forty thousand, five hundred twenty".