28066547721214 has 4 divisors (see below), whose sum is σ = 42099821581824. Its totient is φ = 14033273860606.

The previous prime is 28066547721131. The next prime is 28066547721217. The reversal of 28066547721214 is 41212774566082.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28066547721214² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28066547721217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7016636930302 + ... + 7016636930305.

It is an arithmetic number, because the mean of its divisors is an integer number (10524955395456).

Almost surely, 2^{28066547721214} is an apocalyptic number.

28066547721214 is a deficient number, since it is larger than the sum of its proper divisors (14033273860610).

28066547721214 is a wasteful number, since it uses less digits than its factorization.

28066547721214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14033273860609.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 28066547721214 in words is "twenty-eight trillion, sixty-six billion, five hundred forty-seven million, seven hundred twenty-one thousand, two hundred fourteen".