21844898275986 has 16 divisors (see below), whose sum is σ = 48544218391200. Its totient is φ = 7281632758644.

The previous prime is 21844898275979. The next prime is 21844898275997. The reversal of 21844898275986 is 68957289844812.

21844898275986 is a `hidden beast` number, since 2 + 1 + 8 + 4 + 489 + 8 + 2 + 7 + 59 + 86 = 666.

It is a super-2 number, since 2×21844898275986² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202267576576 + ... + 202267576683.

It is an arithmetic number, because the mean of its divisors is an integer number (3034013649450).

Almost surely, 2^{21844898275986} is an apocalyptic number.

21844898275986 is an abundant number, since it is smaller than the sum of its proper divisors (26699320115214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21844898275986 is a wasteful number, since it uses less digits than its factorization.

21844898275986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404535153270 (or 404535153264 counting only the distinct ones).

The product of its digits is 4459069440, while the sum is 81.

The spelling of 21844898275986 in words is "twenty-one trillion, eight hundred forty-four billion, eight hundred ninety-eight million, two hundred seventy-five thousand, nine hundred eighty-six".