71003635013 has 2 divisors, whose sum is σ = 71003635014. Its totient is φ = 71003635012.

The previous prime is 71003634983. The next prime is 71003635051. The reversal of 71003635013 is 31053630017.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45004652449 + 25998982564 = 212143^2 + 161242^2 .

It is a cyclic number.

It is not a de Polignac number, because 71003635013 - 2²⁰ = 71002586437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71003635613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35501817506 + 35501817507.

It is an arithmetic number, because the mean of its divisors is an integer number (35501817507).

Almost surely, 2^71003635013 is an apocalyptic number.

It is an amenable number.

71003635013 is a deficient number, since it is larger than the sum of its proper divisors (1).

71003635013 is an equidigital number, since it uses as much as digits as its factorization.

71003635013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 29.

The spelling of 71003635013 in words is "seventy-one billion, three million, six hundred thirty-five thousand, thirteen".