21413304024 has 64 divisors (see below), whose sum is σ = 61272099840. Its totient is φ = 6108963840.

The previous prime is 21413304013. The next prime is 21413304047. The reversal of 21413304024 is 42040331412.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 21413303985 and 21413304003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18369 + ... + 207759.

It is an arithmetic number, because the mean of its divisors is an integer number (957376560).

Almost surely, 2^21413304024 is an apocalyptic number.

21413304024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21413304024 is an abundant number, since it is smaller than the sum of its proper divisors (39858795816).

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

21413304024 is a wasteful number, since it uses less digits than its factorization.

21413304024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190080 (or 190076 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21413304024 its reverse (42040331412), we get a palindrome (63453635436).

The spelling of 21413304024 in words is "twenty-one billion, four hundred thirteen million, three hundred four thousand, twenty-four".