28366742877 has 16 divisors (see below), whose sum is σ = 41371353408. Its totient is φ = 17145866880.

The previous prime is 28366742791. The next prime is 28366742879. The reversal of 28366742877 is 77824766382.

It is not a de Polignac number, because 28366742877 - 2⁷ = 28366742749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28366742877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28366742879) 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, 1139968 + ... + 1164585.

It is an arithmetic number, because the mean of its divisors is an integer number (2585709588).

Almost surely, 2^28366742877 is an apocalyptic number.

It is an amenable number.

28366742877 is a deficient number, since it is larger than the sum of its proper divisors (13004610531).

28366742877 is a wasteful number, since it uses less digits than its factorization.

28366742877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304940.

The product of its digits is 37933056, while the sum is 60.

The spelling of 28366742877 in words is "twenty-eight billion, three hundred sixty-six million, seven hundred forty-two thousand, eight hundred seventy-seven".