71385489101 has 2 divisors, whose sum is σ = 71385489102. Its totient is φ = 71385489100.

The previous prime is 71385489073. The next prime is 71385489107. The reversal of 71385489101 is 10198458317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69045445225 + 2340043876 = 262765^2 + 48374^2 .

It is a cyclic number.

It is not a de Polignac number, because 71385489101 - 2¹⁰ = 71385488077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71385489107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35692744550 + 35692744551.

It is an arithmetic number, because the mean of its divisors is an integer number (35692744551).

Almost surely, 2^71385489101 is an apocalyptic number.

It is an amenable number.

71385489101 is a deficient number, since it is larger than the sum of its proper divisors (1).

71385489101 is an equidigital number, since it uses as much as digits as its factorization.

71385489101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 71385489101 in words is "seventy-one billion, three hundred eighty-five million, four hundred eighty-nine thousand, one hundred one".