27800731455 has 16 divisors (see below), whose sum is σ = 50835623424. Its totient is φ = 12708905760.

The previous prime is 27800731421. The next prime is 27800731507. The reversal of 27800731455 is 55413700872.

It is not a de Polignac number, because 27800731455 - 2⁸ = 27800731199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132384331 + ... + 132384540.

It is an arithmetic number, because the mean of its divisors is an integer number (3177226464).

Almost surely, 2^27800731455 is an apocalyptic number.

27800731455 is a deficient number, since it is larger than the sum of its proper divisors (23034891969).

27800731455 is a wasteful number, since it uses less digits than its factorization.

27800731455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264768886.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 27800731455 in words is "twenty-seven billion, eight hundred million, seven hundred thirty-one thousand, four hundred fifty-five".