21882066805 has 16 divisors (see below), whose sum is σ = 26763001344. Its totient is φ = 17169530560.

The previous prime is 21882066803. The next prime is 21882066809. The reversal of 21882066805 is 50866028812.

It is not a de Polignac number, because 21882066805 - 2¹ = 21882066803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21882066803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874620 + ... + 899290.

It is an arithmetic number, because the mean of its divisors is an integer number (1672687584).

Almost surely, 2^21882066805 is an apocalyptic number.

It is an amenable number.

21882066805 is a deficient number, since it is larger than the sum of its proper divisors (4880934539).

21882066805 is a wasteful number, since it uses less digits than its factorization.

21882066805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28076.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 21882066805 in words is "twenty-one billion, eight hundred eighty-two million, sixty-six thousand, eight hundred five".