21413503024 has 40 divisors (see below), whose sum is σ = 43046976960. Its totient is φ = 10306802688.

The previous prime is 21413503021. The next prime is 21413503031. The reversal of 21413503024 is 42030531412.

It is a super-2 number, since 2×21413503024² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21413503024.

It is not an unprimeable number, because it can be changed into a prime (21413503021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87897 + ... + 224839.

It is an arithmetic number, because the mean of its divisors is an integer number (1076174424).

Almost surely, 2^21413503024 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 21413503024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21523488480).

21413503024 is an abundant number, since it is smaller than the sum of its proper divisors (21633473936).

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

21413503024 is a wasteful number, since it uses less digits than its factorization.

21413503024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137317 (or 137311 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The spelling of 21413503024 in words is "twenty-one billion, four hundred thirteen million, five hundred three thousand, twenty-four".