27123938945 has 8 divisors (see below), whose sum is σ = 32549631720. Its totient is φ = 21698547840.

The previous prime is 27123938917. The next prime is 27123938953. The reversal of 27123938945 is 54983932172.

It can be written as a sum of positive squares in 4 ways, for example, as 5097817201 + 22026121744 = 71399^2 + 148412^2 .

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

It is not a de Polignac number, because 27123938945 - 2⁸ = 27123938689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250235 + ... + 341855.

It is an arithmetic number, because the mean of its divisors is an integer number (4068703965).

Almost surely, 2^27123938945 is an apocalyptic number.

It is an amenable number.

27123938945 is a deficient number, since it is larger than the sum of its proper divisors (5425692775).

27123938945 is an equidigital number, since it uses as much as digits as its factorization.

27123938945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150835.

The product of its digits is 3265920, while the sum is 53.

The spelling of 27123938945 in words is "twenty-seven billion, one hundred twenty-three million, nine hundred thirty-eight thousand, nine hundred forty-five".