21424225950 has 96 divisors (see below), whose sum is σ = 59296561920. Its totient is φ = 5687877600.

The previous prime is 21424225897. The next prime is 21424225951. The reversal of 21424225950 is 5952242412.

21424225950 is a `hidden beast` number, since 2 + 1 + 42 + 4 + 22 + 595 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21424225951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 271495 + ... + 341405.

It is an arithmetic number, because the mean of its divisors is an integer number (617672520).

Almost surely, 2^21424225950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21424225950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29648280960).

21424225950 is an abundant number, since it is smaller than the sum of its proper divisors (37872335970).

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

21424225950 is a wasteful number, since it uses less digits than its factorization.

21424225950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70159 (or 70148 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 21424225950 in words is "twenty-one billion, four hundred twenty-four million, two hundred twenty-five thousand, nine hundred fifty".