27800976467 has 4 divisors (see below), whose sum is σ = 30328337976. Its totient is φ = 25273614960.

The previous prime is 27800976419. The next prime is 27800976499. The reversal of 27800976467 is 76467900872.

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

It is not a de Polignac number, because 27800976467 - 2¹⁰ = 27800975443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27800976407) 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, 1263680738 + ... + 1263680759.

It is an arithmetic number, because the mean of its divisors is an integer number (7582084494).

Almost surely, 2^27800976467 is an apocalyptic number.

27800976467 is a deficient number, since it is larger than the sum of its proper divisors (2527361509).

27800976467 is a wasteful number, since it uses less digits than its factorization.

27800976467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527361508.

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 27800976467 in words is "twenty-seven billion, eight hundred million, nine hundred seventy-six thousand, four hundred sixty-seven".