71508345353 has 2 divisors, whose sum is σ = 71508345354. Its totient is φ = 71508345352.

The previous prime is 71508345329. The next prime is 71508345439. The reversal of 71508345353 is 35354380517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43360565824 + 28147779529 = 208232^2 + 167773^2 .

It is a cyclic number.

It is not a de Polignac number, because 71508345353 - 2⁶ = 71508345289 is a prime.

It is a super-2 number, since 2×71508345353² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71508345323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35754172676 + 35754172677.

It is an arithmetic number, because the mean of its divisors is an integer number (35754172677).

Almost surely, 2^71508345353 is an apocalyptic number.

It is an amenable number.

71508345353 is a deficient number, since it is larger than the sum of its proper divisors (1).

71508345353 is an equidigital number, since it uses as much as digits as its factorization.

71508345353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 71508345353 in words is "seventy-one billion, five hundred eight million, three hundred forty-five thousand, three hundred fifty-three".