21411144624 has 20 divisors (see below), whose sum is σ = 55312123736. Its totient is φ = 7137048192.

The previous prime is 21411144617. The next prime is 21411144637. The reversal of 21411144624 is 42644111412.

It is a super-2 number, since 2×21411144624² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21411144591 and 21411144600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223032709 + ... + 223032804.

Almost surely, 2^21411144624 is an apocalyptic number.

21411144624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21411144624 is an abundant number, since it is smaller than the sum of its proper divisors (33900979112).

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

21411144624 is a wasteful number, since it uses less digits than its factorization.

21411144624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446065524 (or 446065518 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The spelling of 21411144624 in words is "twenty-one billion, four hundred eleven million, one hundred forty-four thousand, six hundred twenty-four".