21424216050 has 72 divisors (see below), whose sum is σ = 57602563200. Its totient is φ = 5708872800.

The previous prime is 21424216049. The next prime is 21424216063. The reversal of 21424216050 is 5061242412.

21424216050 is a `hidden beast` number, since 2 + 14 + 2 + 42 + 1 + 605 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 612535 + ... + 646565.

It is an arithmetic number, because the mean of its divisors is an integer number (800035600).

Almost surely, 2^21424216050 is an apocalyptic number.

21424216050 is an abundant number, since it is smaller than the sum of its proper divisors (36178347150).

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

21424216050 is a wasteful number, since it uses less digits than its factorization.

21424216050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35448 (or 35440 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 21424216050 its reverse (5061242412), we get a palindrome (26485458462).

The spelling of 21424216050 in words is "twenty-one billion, four hundred twenty-four million, two hundred sixteen thousand, fifty".