71236752533 has 2 divisors, whose sum is σ = 71236752534. Its totient is φ = 71236752532.

The previous prime is 71236752527. The next prime is 71236752593. The reversal of 71236752533 is 33525763217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38133497284 + 33103255249 = 195278^2 + 181943^2 .

It is a cyclic number.

It is not a de Polignac number, because 71236752533 - 2²⁶ = 71169643669 is a prime.

It is a super-2 number, since 2×71236752533² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71236752593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35618376266 + 35618376267.

It is an arithmetic number, because the mean of its divisors is an integer number (35618376267).

Almost surely, 2^71236752533 is an apocalyptic number.

It is an amenable number.

71236752533 is a deficient number, since it is larger than the sum of its proper divisors (1).

71236752533 is an equidigital number, since it uses as much as digits as its factorization.

71236752533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 44.

The spelling of 71236752533 in words is "seventy-one billion, two hundred thirty-six million, seven hundred fifty-two thousand, five hundred thirty-three".