27726721066 has 8 divisors (see below), whose sum is σ = 45370998144. Its totient is φ = 12603055020.

The previous prime is 27726721039. The next prime is 27726721073. The reversal of 27726721066 is 66012762772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×27726721066² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630152730 + ... + 630152773.

It is an arithmetic number, because the mean of its divisors is an integer number (5671374768).

Almost surely, 2^27726721066 is an apocalyptic number.

27726721066 is a deficient number, since it is larger than the sum of its proper divisors (17644277078).

27726721066 is a wasteful number, since it uses less digits than its factorization.

27726721066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260305516.

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 27726721066 in words is "twenty-seven billion, seven hundred twenty-six million, seven hundred twenty-one thousand, sixty-six".