21035343024 has 60 divisors (see below), whose sum is σ = 60899748000. Its totient is φ = 6769994112.

The previous prime is 21035343019. The next prime is 21035343031. The reversal of 21035343024 is 42034353012.

21035343024 is a `hidden beast` number, since 2 + 1 + 0 + 353 + 4 + 302 + 4 = 666.

It is a super-2 number, since 2×21035343024² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2514424 + ... + 2522775.

It is an arithmetic number, because the mean of its divisors is an integer number (1014995800).

Almost surely, 2^21035343024 is an apocalyptic number.

21035343024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21035343024 is an abundant number, since it is smaller than the sum of its proper divisors (39864404976).

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

21035343024 is a wasteful number, since it uses less digits than its factorization.

21035343024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5037242 (or 5037233 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 21035343024 its reverse (42034353012), we get a palindrome (63069696036).

The spelling of 21035343024 in words is "twenty-one billion, thirty-five million, three hundred forty-three thousand, twenty-four".