27801091103 has 4 divisors (see below), whose sum is σ = 27801604128. Its totient is φ = 27800578080.

The previous prime is 27801091091. The next prime is 27801091127. The reversal of 27801091103 is 30119010872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27801091103 - 2²⁶ = 27733982239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27801091103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27801091603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164138 + ... + 287303.

It is an arithmetic number, because the mean of its divisors is an integer number (6950401032).

Almost surely, 2^27801091103 is an apocalyptic number.

27801091103 is a deficient number, since it is larger than the sum of its proper divisors (513025).

27801091103 is an equidigital number, since it uses as much as digits as its factorization.

27801091103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513024.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 27801091103 in words is "twenty-seven billion, eight hundred one million, ninety-one thousand, one hundred three".