21732469684 has 12 divisors (see below), whose sum is σ = 38841009984. Its totient is φ = 10635038264.

The previous prime is 21732469631. The next prime is 21732469697. The reversal of 21732469684 is 48696423712.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 57798934 + ... + 57799309.

It is an arithmetic number, because the mean of its divisors is an integer number (3236750832).

Almost surely, 2^21732469684 is an apocalyptic number.

It is an amenable number.

21732469684 is a deficient number, since it is larger than the sum of its proper divisors (17108540300).

21732469684 is a wasteful number, since it uses less digits than its factorization.

21732469684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115598294 (or 115598292 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 52.

The spelling of 21732469684 in words is "twenty-one billion, seven hundred thirty-two million, four hundred sixty-nine thousand, six hundred eighty-four".