27983707613 has 4 divisors (see below), whose sum is σ = 28337931840. Its totient is φ = 27629483388.

The previous prime is 27983707601. The next prime is 27983707637. The reversal of 27983707613 is 31670738972.

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 27983707613 - 2¹⁶ = 27983642077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27983767613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177111995 + ... + 177112152.

It is an arithmetic number, because the mean of its divisors is an integer number (7084482960).

Almost surely, 2^27983707613 is an apocalyptic number.

It is an amenable number.

27983707613 is a deficient number, since it is larger than the sum of its proper divisors (354224227).

27983707613 is an equidigital number, since it uses as much as digits as its factorization.

27983707613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354224226.

The product of its (nonzero) digits is 2667168, while the sum is 53.

The spelling of 27983707613 in words is "twenty-seven billion, nine hundred eighty-three million, seven hundred seven thousand, six hundred thirteen".