27726670423 has 4 divisors (see below), whose sum is σ = 27728019648. Its totient is φ = 27725321200.

The previous prime is 27726670399. The next prime is 27726670451. The reversal of 27726670423 is 32407662772.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27726670423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27726670483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643303 + ... + 685048.

It is an arithmetic number, because the mean of its divisors is an integer number (6932004912).

Almost surely, 2^27726670423 is an apocalyptic number.

27726670423 is a deficient number, since it is larger than the sum of its proper divisors (1349225).

27726670423 is a wasteful number, since it uses less digits than its factorization.

27726670423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349224.

The product of its (nonzero) digits is 1185408, while the sum is 46.

The spelling of 27726670423 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred seventy thousand, four hundred twenty-three".