21341504424 has 32 divisors (see below), whose sum is σ = 53882022240. Its totient is φ = 7043400000.

The previous prime is 21341504419. The next prime is 21341504441. The reversal of 21341504424 is 42440514312.

It is a super-2 number, since 2×21341504424² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21341504391 and 21341504400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4399702 + ... + 4404549.

It is an arithmetic number, because the mean of its divisors is an integer number (1683813195).

Almost surely, 2^21341504424 is an apocalyptic number.

21341504424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21341504424 is an abundant number, since it is smaller than the sum of its proper divisors (32540517816).

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

21341504424 is a wasteful number, since it uses less digits than its factorization.

21341504424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8804361 (or 8804357 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The spelling of 21341504424 in words is "twenty-one billion, three hundred forty-one million, five hundred four thousand, four hundred twenty-four".