21300084717871 has 8 divisors (see below), whose sum is σ = 21339115927920. Its totient is φ = 21261056342208.

The previous prime is 21300084717833. The next prime is 21300084717893. The reversal of 21300084717871 is 17871748000312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21300084717871 - 2¹⁷ = 21300084586799 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 (21300084717971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14639100 + ... + 16028206.

It is an arithmetic number, because the mean of its divisors is an integer number (2667389490990).

Almost surely, 2^{21300084717871} is an apocalyptic number.

21300084717871 is a deficient number, since it is larger than the sum of its proper divisors (39031210049).

21300084717871 is a wasteful number, since it uses less digits than its factorization.

21300084717871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417193.

The product of its (nonzero) digits is 526848, while the sum is 49.

The spelling of 21300084717871 in words is "twenty-one trillion, three hundred billion, eighty-four million, seven hundred seventeen thousand, eight hundred seventy-one".