27403966361 has 4 divisors (see below), whose sum is σ = 28846280400. Its totient is φ = 25961652324.

The previous prime is 27403966339. The next prime is 27403966379. The reversal of 27403966361 is 16366930472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27403966361 - 2⁶ = 27403966297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27403966321) 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, 721156991 + ... + 721157028.

It is an arithmetic number, because the mean of its divisors is an integer number (7211570100).

Almost surely, 2^27403966361 is an apocalyptic number.

It is an amenable number.

27403966361 is a deficient number, since it is larger than the sum of its proper divisors (1442314039).

27403966361 is a wasteful number, since it uses less digits than its factorization.

27403966361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442314038.

The product of its (nonzero) digits is 979776, while the sum is 47.

The spelling of 27403966361 in words is "twenty-seven billion, four hundred three million, nine hundred sixty-six thousand, three hundred sixty-one".