21600624124 has 18 divisors (see below), whose sum is σ = 38850365400. Its totient is φ = 10508409072.

The previous prime is 21600624079. The next prime is 21600624139. The reversal of 21600624124 is 42142600612.

It is a super-3 number, since 3×21600624124³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21600624092 and 21600624101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1966824 + ... + 1977775.

Almost surely, 2^21600624124 is an apocalyptic number.

It is an amenable number.

21600624124 is a deficient number, since it is larger than the sum of its proper divisors (17249741276).

21600624124 is a wasteful number, since it uses less digits than its factorization.

21600624124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944677 (or 3944638 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 21600624124 in words is "twenty-one billion, six hundred million, six hundred twenty-four thousand, one hundred twenty-four".