21000410024 has 32 divisors (see below), whose sum is σ = 42969709440. Its totient is φ = 9542457600.

The previous prime is 21000410023. The next prime is 21000410051. The reversal of 21000410024 is 42001400012.

It is a super-2 number, since 2×21000410024² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21000409990 and 21000410008.

It is not an unprimeable number, because it can be changed into a prime (21000410021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236417 + ... + 312879.

It is an arithmetic number, because the mean of its divisors is an integer number (1342803420).

Almost surely, 2^21000410024 is an apocalyptic number.

It is an amenable number.

21000410024 is an abundant number, since it is smaller than the sum of its proper divisors (21969299416).

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

21000410024 is a wasteful number, since it uses less digits than its factorization.

21000410024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79601 (or 79597 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21000410024 its reverse (42001400012), we get a palindrome (63001810036).

The spelling of 21000410024 in words is "twenty-one billion, four hundred ten thousand, twenty-four".