28077078918 has 32 divisors (see below), whose sum is σ = 65387056896. Its totient is φ = 7870663008.

The previous prime is 28077078917. The next prime is 28077078947. The reversal of 28077078918 is 81987077082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28077078917) 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, 6304396 + ... + 6308847.

It is an arithmetic number, because the mean of its divisors is an integer number (2043345528).

Almost surely, 2^28077078918 is an apocalyptic number.

28077078918 is an abundant number, since it is smaller than the sum of its proper divisors (37309977978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28077078918 is a wasteful number, since it uses less digits than its factorization.

28077078918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12613308.

The product of its (nonzero) digits is 3161088, while the sum is 57.

The spelling of 28077078918 in words is "twenty-eight billion, seventy-seven million, seventy-eight thousand, nine hundred eighteen".