27944912877 has 16 divisors (see below), whose sum is σ = 42693918720. Its totient is φ = 15926823792.

The previous prime is 27944912843. The next prime is 27944912887. The reversal of 27944912877 is 77821944972.

It is not a de Polignac number, because 27944912877 - 2⁶ = 27944912813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27944912877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27944912837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729177 + ... + 1745262.

It is an arithmetic number, because the mean of its divisors is an integer number (2668369920).

Almost surely, 2^27944912877 is an apocalyptic number.

It is an amenable number.

27944912877 is a deficient number, since it is larger than the sum of its proper divisors (14749005843).

27944912877 is a wasteful number, since it uses less digits than its factorization.

27944912877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474832.

The product of its digits is 14224896, while the sum is 60.

The spelling of 27944912877 in words is "twenty-seven billion, nine hundred forty-four million, nine hundred twelve thousand, eight hundred seventy-seven".