21986284383 has 32 divisors (see below), whose sum is σ = 37290155520. Its totient is φ = 12541754880.

The previous prime is 21986284381. The next prime is 21986284391. The reversal of 21986284383 is 38348268912.

21986284383 is a `hidden beast` number, since 2 + 1 + 9 + 8 + 628 + 4 + 3 + 8 + 3 = 666.

It is not a de Polignac number, because 21986284383 - 2¹ = 21986284381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21986284381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8248 + ... + 209858.

It is an arithmetic number, because the mean of its divisors is an integer number (1165317360).

Almost surely, 2^21986284383 is an apocalyptic number.

21986284383 is a deficient number, since it is larger than the sum of its proper divisors (15303871137).

21986284383 is a wasteful number, since it uses less digits than its factorization.

21986284383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202204 (or 202198 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 21986284383 in words is "twenty-one billion, nine hundred eighty-six million, two hundred eighty-four thousand, three hundred eighty-three".