27544916813 has 4 divisors (see below), whose sum is σ = 27559593660. Its totient is φ = 27530239968.

The previous prime is 27544916801. The next prime is 27544916821. The reversal of 27544916813 is 31861944572.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11846580964 + 15698335849 = 108842^2 + 125293^2 .

It is a cyclic number.

It is not a de Polignac number, because 27544916813 - 2²⁸ = 27276481357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27544915813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7335608 + ... + 7339361.

It is an arithmetic number, because the mean of its divisors is an integer number (6889898415).

Almost surely, 2^27544916813 is an apocalyptic number.

It is an amenable number.

27544916813 is a deficient number, since it is larger than the sum of its proper divisors (14676847).

27544916813 is a wasteful number, since it uses less digits than its factorization.

27544916813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14676846.

The product of its digits is 1451520, while the sum is 50.

The spelling of 27544916813 in words is "twenty-seven billion, five hundred forty-four million, nine hundred sixteen thousand, eight hundred thirteen".