71294328293 has 2 divisors, whose sum is σ = 71294328294. Its totient is φ = 71294328292.

The previous prime is 71294328263. The next prime is 71294328359. The reversal of 71294328293 is 39282349217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36453119329 + 34841208964 = 190927^2 + 186658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71294328293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71294328233) 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, 35647164146 + 35647164147.

It is an arithmetic number, because the mean of its divisors is an integer number (35647164147).

Almost surely, 2^71294328293 is an apocalyptic number.

It is an amenable number.

71294328293 is a deficient number, since it is larger than the sum of its proper divisors (1).

71294328293 is an equidigital number, since it uses as much as digits as its factorization.

71294328293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The spelling of 71294328293 in words is "seventy-one billion, two hundred ninety-four million, three hundred twenty-eight thousand, two hundred ninety-three".