27542436370871 has 2 divisors, whose sum is σ = 27542436370872. Its totient is φ = 27542436370870.

The previous prime is 27542436370859. The next prime is 27542436370877. The reversal of 27542436370871 is 17807363424572.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27542436370871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27542436370871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27542436370877) 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 as a sum of consecutive naturals, namely, 13771218185435 + 13771218185436.

It is an arithmetic number, because the mean of its divisors is an integer number (13771218185436).

Almost surely, 2^{27542436370871} is an apocalyptic number.

27542436370871 is a deficient number, since it is larger than the sum of its proper divisors (1).

27542436370871 is an equidigital number, since it uses as much as digits as its factorization.

27542436370871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47416320, while the sum is 59.

The spelling of 27542436370871 in words is "twenty-seven trillion, five hundred forty-two billion, four hundred thirty-six million, three hundred seventy thousand, eight hundred seventy-one".