27542457272845 has 8 divisors (see below), whose sum is σ = 33050987999640. Its totient is φ = 22033939636800.

The previous prime is 27542457272839. The next prime is 27542457272849. The reversal of 27542457272845 is 54827275424572.

It can be written as a sum of positive squares in 4 ways, for example, as 5240129891689 + 22302327381156 = 2289133^2 + 4722534^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-27542457272845 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27542457272849) 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, 2182771 + ... + 7736239.

It is an arithmetic number, because the mean of its divisors is an integer number (4131373499955).

Almost surely, 2^{27542457272845} is an apocalyptic number.

It is an amenable number.

27542457272845 is a deficient number, since it is larger than the sum of its proper divisors (5508530726795).

27542457272845 is an equidigital number, since it uses as much as digits as its factorization.

27542457272845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6545375.

The product of its digits is 351232000, while the sum is 64.

The spelling of 27542457272845 in words is "twenty-seven trillion, five hundred forty-two billion, four hundred fifty-seven million, two hundred seventy-two thousand, eight hundred forty-five".