27903148867 has 4 divisors (see below), whose sum is σ = 30439798776. Its totient is φ = 25366498960.

The previous prime is 27903148837. The next prime is 27903148927. The reversal of 27903148867 is 76884130972.

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

It is not a de Polignac number, because 27903148867 - 2⁷ = 27903148739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27903148837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268324938 + ... + 1268324959.

It is an arithmetic number, because the mean of its divisors is an integer number (7609949694).

Almost surely, 2^27903148867 is an apocalyptic number.

27903148867 is a deficient number, since it is larger than the sum of its proper divisors (2536649909).

27903148867 is a wasteful number, since it uses less digits than its factorization.

27903148867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536649908.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 27903148867 in words is "twenty-seven billion, nine hundred three million, one hundred forty-eight thousand, eight hundred sixty-seven".