21846521884052 has 12 divisors (see below), whose sum is σ = 39163886792436. Its totient is φ = 10656839943360.

The previous prime is 21846521884003. The next prime is 21846521884091. The reversal of 21846521884052 is 25048812564812.

It can be written as a sum of positive squares in 2 ways, for example, as 686853082756 + 21159668801296 = 828766^2 + 4599964^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 66605249483 + ... + 66605249810.

It is an arithmetic number, because the mean of its divisors is an integer number (3263657232703).

Almost surely, 2^{21846521884052} is an apocalyptic number.

It is an amenable number.

21846521884052 is a deficient number, since it is larger than the sum of its proper divisors (17317364908384).

21846521884052 is a wasteful number, since it uses less digits than its factorization.

21846521884052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133210499338 (or 133210499336 counting only the distinct ones).

The product of its (nonzero) digits is 9830400, while the sum is 56.

The spelling of 21846521884052 in words is "twenty-one trillion, eight hundred forty-six billion, five hundred twenty-one million, eight hundred eighty-four thousand, fifty-two".