27726680406 has 16 divisors (see below), whose sum is σ = 55743694848. Its totient is φ = 9193837800.

The previous prime is 27726680393. The next prime is 27726680407. The reversal of 27726680406 is 60408662772.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27726680407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12096010 + ... + 12098301.

It is an arithmetic number, because the mean of its divisors is an integer number (3483980928).

Almost surely, 2^27726680406 is an apocalyptic number.

27726680406 is an abundant number, since it is smaller than the sum of its proper divisors (28017014442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27726680406 is a wasteful number, since it uses less digits than its factorization.

27726680406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24194507.

The product of its (nonzero) digits is 1354752, while the sum is 48.

The spelling of 27726680406 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred eighty thousand, four hundred six".