21433714636 has 24 divisors (see below), whose sum is σ = 39500310080. Its totient is φ = 10148401872.

The previous prime is 21433714633. The next prime is 21433714637. The reversal of 21433714636 is 63641733412.

It is a super-2 number, since 2×21433714636² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21433714633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118291 + ... + 238453.

Almost surely, 2^21433714636 is an apocalyptic number.

It is an amenable number.

21433714636 is a deficient number, since it is larger than the sum of its proper divisors (18066595444).

21433714636 is a wasteful number, since it uses less digits than its factorization.

21433714636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122533 (or 122531 counting only the distinct ones).

The product of its digits is 217728, while the sum is 40.

The spelling of 21433714636 in words is "twenty-one billion, four hundred thirty-three million, seven hundred fourteen thousand, six hundred thirty-six".