27666540111 has 32 divisors (see below), whose sum is σ = 42668792320. Its totient is φ = 15618686976.

The previous prime is 27666540059. The next prime is 27666540113. The reversal of 27666540111 is 11104566672.

It is not a de Polignac number, because 27666540111 - 2⁶ = 27666540047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27666540111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27666540113) 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 31 ways as a sum of consecutive naturals, for example, 1163580 + ... + 1187118.

It is an arithmetic number, because the mean of its divisors is an integer number (1333399760).

Almost surely, 2^27666540111 is an apocalyptic number.

27666540111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27666540111 is a deficient number, since it is larger than the sum of its proper divisors (15002252209).

27666540111 is a wasteful number, since it uses less digits than its factorization.

27666540111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24223.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 27666540111 in words is "twenty-seven billion, six hundred sixty-six million, five hundred forty thousand, one hundred eleven".