71297853349 has 2 divisors, whose sum is σ = 71297853350. Its totient is φ = 71297853348.

The previous prime is 71297853337. The next prime is 71297853373. The reversal of 71297853349 is 94335879217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54966802500 + 16331050849 = 234450^2 + 127793^2 .

It is a cyclic number.

It is not a de Polignac number, because 71297853349 - 2⁹ = 71297852837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71297853293 and 71297853302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71297851349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35648926674 + 35648926675.

It is an arithmetic number, because the mean of its divisors is an integer number (35648926675).

Almost surely, 2^71297853349 is an apocalyptic number.

It is an amenable number.

71297853349 is a deficient number, since it is larger than the sum of its proper divisors (1).

71297853349 is an equidigital number, since it uses as much as digits as its factorization.

71297853349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 58.

The spelling of 71297853349 in words is "seventy-one billion, two hundred ninety-seven million, eight hundred fifty-three thousand, three hundred forty-nine".