71427547141 has 2 divisors, whose sum is σ = 71427547142. Its totient is φ = 71427547140.

The previous prime is 71427547129. The next prime is 71427547181. The reversal of 71427547141 is 14174572417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62507500225 + 8920046916 = 250015^2 + 94446^2 .

It is a cyclic number.

It is not a de Polignac number, because 71427547141 - 2¹⁷ = 71427416069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71427547111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35713773570 + 35713773571.

It is an arithmetic number, because the mean of its divisors is an integer number (35713773571).

Almost surely, 2^71427547141 is an apocalyptic number.

It is an amenable number.

71427547141 is a deficient number, since it is larger than the sum of its proper divisors (1).

71427547141 is an equidigital number, since it uses as much as digits as its factorization.

71427547141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 219520, while the sum is 43.

The spelling of 71427547141 in words is "seventy-one billion, four hundred twenty-seven million, five hundred forty-seven thousand, one hundred forty-one".