27719794745 has 8 divisors (see below), whose sum is σ = 33268297416. Its totient is φ = 22172806656.

The previous prime is 27719794723. The next prime is 27719794747. The reversal of 27719794745 is 54749791772.

It can be written as a sum of positive squares in 4 ways, for example, as 58782889 + 27661011856 = 7667^2 + 166316^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27719794745 - 2¹⁰ = 27719793721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27719794747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337982 + ... + 411911.

It is an arithmetic number, because the mean of its divisors is an integer number (4158537177).

Almost surely, 2^27719794745 is an apocalyptic number.

It is an amenable number.

27719794745 is a deficient number, since it is larger than the sum of its proper divisors (5548502671).

27719794745 is an equidigital number, since it uses as much as digits as its factorization.

27719794745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757291.

The product of its digits is 31116960, while the sum is 62.

The spelling of 27719794745 in words is "twenty-seven billion, seven hundred nineteen million, seven hundred ninety-four thousand, seven hundred forty-five".