21676224753 has 24 divisors (see below), whose sum is σ = 32623698016. Its totient is φ = 14382295200.

The previous prime is 21676224749. The next prime is 21676224809. The reversal of 21676224753 is 35742267612.

21676224753 is a `hidden beast` number, since 2 + 16 + 7 + 622 + 4 + 7 + 5 + 3 = 666.

It is not a de Polignac number, because 21676224753 - 2² = 21676224749 is a prime.

It is a super-2 number, since 2×21676224753² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21676224699 and 21676224708.

It is not an unprimeable number, because it can be changed into a prime (21676224253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160108 + ... + 262653.

Almost surely, 2^21676224753 is an apocalyptic number.

It is an amenable number.

21676224753 is a deficient number, since it is larger than the sum of its proper divisors (10947473263).

21676224753 is an equidigital number, since it uses as much as digits as its factorization.

21676224753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422987 (or 422975 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The spelling of 21676224753 in words is "twenty-one billion, six hundred seventy-six million, two hundred twenty-four thousand, seven hundred fifty-three".