21084866014276 has 9 divisors (see below), whose sum is σ = 36898531596381. Its totient is φ = 10542428415312.

The previous prime is 21084866014271. The next prime is 21084866014283. The reversal of 21084866014276 is 67241066848012.

The square root of 21084866014276 is 4591826.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2850053004100 + 18234813010176 = 1688210^2 + 4270224^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21084866014271) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 8035696 + ... + 10331608.

Almost surely, 2^{21084866014276} is an apocalyptic number.

21084866014276 is the 4591826-th square number.

It is an amenable number.

21084866014276 is a deficient number, since it is larger than the sum of its proper divisors (15813665582105).

21084866014276 is an frugal number, since it uses more digits than its factorization.

21084866014276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591830 (or 2295915 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 55.

The spelling of 21084866014276 in words is "twenty-one trillion, eighty-four billion, eight hundred sixty-six million, fourteen thousand, two hundred seventy-six".