21066364214 has 16 divisors (see below), whose sum is σ = 36229154208. Its totient is φ = 8999595072.

The previous prime is 21066364183. The next prime is 21066364219. The reversal of 21066364214 is 41246366012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21066364219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2399357 + ... + 2408120.

It is an arithmetic number, because the mean of its divisors is an integer number (2264322138).

Almost surely, 2^21066364214 is an apocalyptic number.

21066364214 is a deficient number, since it is larger than the sum of its proper divisors (15162789994).

21066364214 is a wasteful number, since it uses less digits than its factorization.

21066364214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807799.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 21066364214 in words is "twenty-one billion, sixty-six million, three hundred sixty-four thousand, two hundred fourteen".