27728762127 has 16 divisors (see below), whose sum is σ = 42455521920. Its totient is φ = 15920820000.

The previous prime is 27728762071. The next prime is 27728762141. The reversal of 27728762127 is 72126782772.

It is a happy number.

It is not a de Polignac number, because 27728762127 - 2⁸ = 27728761871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27728762127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27728762167) 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, 22111624 + ... + 22112877.

It is an arithmetic number, because the mean of its divisors is an integer number (2653470120).

Almost surely, 2^27728762127 is an apocalyptic number.

27728762127 is a deficient number, since it is larger than the sum of its proper divisors (14726759793).

27728762127 is a wasteful number, since it uses less digits than its factorization.

27728762127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44224534.

The product of its digits is 1843968, while the sum is 51.

The spelling of 27728762127 in words is "twenty-seven billion, seven hundred twenty-eight million, seven hundred sixty-two thousand, one hundred twenty-seven".