27666366353 has 4 divisors (see below), whose sum is σ = 27709128000. Its totient is φ = 27623604708.

The previous prime is 27666366349. The next prime is 27666366379. The reversal of 27666366353 is 35366366672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27666366353 - 2² = 27666366349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27666366295 and 27666366304.

It is not an unprimeable number, because it can be changed into a prime (27666366313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21379853 + ... + 21381146.

It is an arithmetic number, because the mean of its divisors is an integer number (6927282000).

Almost surely, 2^27666366353 is an apocalyptic number.

It is an amenable number.

27666366353 is a deficient number, since it is larger than the sum of its proper divisors (42761647).

27666366353 is an equidigital number, since it uses as much as digits as its factorization.

27666366353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42761646.

The product of its digits is 14696640, while the sum is 53.

The spelling of 27666366353 in words is "twenty-seven billion, six hundred sixty-six million, three hundred sixty-six thousand, three hundred fifty-three".