21722783048 has 36 divisors (see below), whose sum is σ = 41199029235. Its totient is φ = 10737788976.

The previous prime is 21722782969. The next prime is 21722783077. The reversal of 21722783048 is 84038722712.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 10861391524 + 10861391524 = 104218^2 + 104218^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=104218.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44605061 + ... + 44605547.

Almost surely, 2^21722783048 is an apocalyptic number.

It is an amenable number.

21722783048 is a deficient number, since it is larger than the sum of its proper divisors (19476246187).

21722783048 is an frugal number, since it uses more digits than its factorization.

21722783048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The spelling of 21722783048 in words is "twenty-one billion, seven hundred twenty-two million, seven hundred eighty-three thousand, forty-eight".