21848940705 has 16 divisors (see below), whose sum is σ = 35103366144. Its totient is φ = 11604414720.

The previous prime is 21848940691. The next prime is 21848940727. The reversal of 21848940705 is 50704984812.

It is a happy number.

It is not a de Polignac number, because 21848940705 - 2⁷ = 21848940577 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3018369 + ... + 3025598.

It is an arithmetic number, because the mean of its divisors is an integer number (2193960384).

Almost surely, 2^21848940705 is an apocalyptic number.

It is an amenable number.

21848940705 is a deficient number, since it is larger than the sum of its proper divisors (13254425439).

21848940705 is a wasteful number, since it uses less digits than its factorization.

21848940705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044216.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 21848940705 in words is "twenty-one billion, eight hundred forty-eight million, nine hundred forty thousand, seven hundred five".