71474747893 has 2 divisors, whose sum is σ = 71474747894. Its totient is φ = 71474747892.

The previous prime is 71474747881. The next prime is 71474747921. The reversal of 71474747893 is 39874747417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58863008689 + 12611739204 = 242617^2 + 112302^2 .

It is an emirp because it is prime and its reverse (39874747417) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71474747893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71474744893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35737373946 + 35737373947.

It is an arithmetic number, because the mean of its divisors is an integer number (35737373947).

Almost surely, 2^71474747893 is an apocalyptic number.

It is an amenable number.

71474747893 is a deficient number, since it is larger than the sum of its proper divisors (1).

71474747893 is an equidigital number, since it uses as much as digits as its factorization.

71474747893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33191424, while the sum is 61.

The spelling of 71474747893 in words is "seventy-one billion, four hundred seventy-four million, seven hundred forty-seven thousand, eight hundred ninety-three".