27483166668721 has 3 divisors (see below), whose sum is σ = 27483171911161. Its totient is φ = 27483161426282.

The previous prime is 27483166668649. The next prime is 27483166668751. The reversal of 27483166668721 is 12786666138472.

The square root of 27483166668721 is 5242439.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 27483166668721 - 2¹¹ = 27483166666673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27483166668751) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2621220 + ... + 7863658.

Almost surely, 2^{27483166668721} is an apocalyptic number.

27483166668721 is the 5242439-th square number.

27483166668721 is the 2621220-th centered octagonal number.

It is an amenable number.

27483166668721 is a deficient number, since it is larger than the sum of its proper divisors (5242440).

27483166668721 is an frugal number, since it uses more digits than its factorization.

27483166668721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10484878 (or 5242439 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 67.

The spelling of 27483166668721 in words is "twenty-seven trillion, four hundred eighty-three billion, one hundred sixty-six million, six hundred sixty-eight thousand, seven hundred twenty-one".