28127550549 has 16 divisors (see below), whose sum is σ = 45382267008. Its totient is φ = 15127421952.

The previous prime is 28127550547. The next prime is 28127550559. The reversal of 28127550549 is 94505572182.

It is not a de Polignac number, because 28127550549 - 2¹ = 28127550547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28127550498 and 28127550507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28127550547) 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, 39393972 + ... + 39394685.

It is an arithmetic number, because the mean of its divisors is an integer number (2836391688).

Almost surely, 2^28127550549 is an apocalyptic number.

It is an amenable number.

28127550549 is a deficient number, since it is larger than the sum of its proper divisors (17254716459).

28127550549 is a wasteful number, since it uses less digits than its factorization.

28127550549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78788684.

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 28127550549 in words is "twenty-eight billion, one hundred twenty-seven million, five hundred fifty thousand, five hundred forty-nine".