27945396341 has 4 divisors (see below), whose sum is σ = 28006015884. Its totient is φ = 27884776800.

The previous prime is 27945396319. The next prime is 27945396361. The reversal of 27945396341 is 14369354972.

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 15338822500 + 12606573841 = 123850^2 + 112279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27945396341 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 (27945396361) 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, 30309080 + ... + 30310001.

It is an arithmetic number, because the mean of its divisors is an integer number (7001503971).

Almost surely, 2^27945396341 is an apocalyptic number.

It is an amenable number.

27945396341 is a deficient number, since it is larger than the sum of its proper divisors (60619543).

27945396341 is an equidigital number, since it uses as much as digits as its factorization.

27945396341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60619542.

The product of its digits is 4898880, while the sum is 53.

The spelling of 27945396341 in words is "twenty-seven billion, nine hundred forty-five million, three hundred ninety-six thousand, three hundred forty-one".