21732179050 has 24 divisors (see below), whose sum is σ = 42179327136. Its totient is φ = 8314920240.

The previous prime is 21732179017. The next prime is 21732179071. The reversal of 21732179050 is 5097123712.

It is a super-2 number, since 2×21732179050² (a number of 21 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 9447624 + ... + 9449923.

It is an arithmetic number, because the mean of its divisors is an integer number (1757471964).

Almost surely, 2^21732179050 is an apocalyptic number.

21732179050 is a deficient number, since it is larger than the sum of its proper divisors (20447148086).

21732179050 is a wasteful number, since it uses less digits than its factorization.

21732179050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18897582 (or 18897577 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The spelling of 21732179050 in words is "twenty-one billion, seven hundred thirty-two million, one hundred seventy-nine thousand, fifty".