27905530403 has 4 divisors (see below), whose sum is σ = 27907763160. Its totient is φ = 27903297648.

The previous prime is 27905530397. The next prime is 27905530423. The reversal of 27905530403 is 30403550972.

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 27905530403 - 2¹⁴ = 27905514019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27905530423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097525 + ... + 1122662.

It is an arithmetic number, because the mean of its divisors is an integer number (6976940790).

Almost surely, 2^27905530403 is an apocalyptic number.

27905530403 is a deficient number, since it is larger than the sum of its proper divisors (2232757).

27905530403 is a wasteful number, since it uses less digits than its factorization.

27905530403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232756.

The product of its (nonzero) digits is 113400, while the sum is 38.

The spelling of 27905530403 in words is "twenty-seven billion, nine hundred five million, five hundred thirty thousand, four hundred three".