27403904899 has 4 divisors (see below), whose sum is σ = 31318748464. Its totient is φ = 23489061336.

The previous prime is 27403904881. The next prime is 27403904959. The reversal of 27403904899 is 99840930472.

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 27403904899 - 2⁹ = 27403904387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27403904999) 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, 1957421772 + ... + 1957421785.

It is an arithmetic number, because the mean of its divisors is an integer number (7829687116).

Almost surely, 2^27403904899 is an apocalyptic number.

27403904899 is a deficient number, since it is larger than the sum of its proper divisors (3914843565).

27403904899 is an equidigital number, since it uses as much as digits as its factorization.

27403904899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914843564.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 27403904899 in words is "twenty-seven billion, four hundred three million, nine hundred four thousand, eight hundred ninety-nine".