71436341749 has 2 divisors, whose sum is σ = 71436341750. Its totient is φ = 71436341748.

The previous prime is 71436341737. The next prime is 71436341771. The reversal of 71436341749 is 94714363417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54187459524 + 17248882225 = 232782^2 + 131335^2 .

It is an emirp because it is prime and its reverse (94714363417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71436341749 - 2⁹ = 71436341237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71436341549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35718170874 + 35718170875.

It is an arithmetic number, because the mean of its divisors is an integer number (35718170875).

Almost surely, 2^71436341749 is an apocalyptic number.

It is an amenable number.

71436341749 is a deficient number, since it is larger than the sum of its proper divisors (1).

71436341749 is an equidigital number, since it uses as much as digits as its factorization.

71436341749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 49.

The spelling of 71436341749 in words is "seventy-one billion, four hundred thirty-six million, three hundred forty-one thousand, seven hundred forty-nine".