71152127509 has 2 divisors, whose sum is σ = 71152127510. Its totient is φ = 71152127508.

The previous prime is 71152127507. The next prime is 71152127591. The reversal of 71152127509 is 90572125117.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57466637284 + 13685490225 = 239722^2 + 116985^2 .

It is a cyclic number.

It is not a de Polignac number, because 71152127509 - 2¹ = 71152127507 is a prime.

Together with 71152127507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71152127507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35576063754 + 35576063755.

It is an arithmetic number, because the mean of its divisors is an integer number (35576063755).

Almost surely, 2^71152127509 is an apocalyptic number.

It is an amenable number.

71152127509 is a deficient number, since it is larger than the sum of its proper divisors (1).

71152127509 is an equidigital number, since it uses as much as digits as its factorization.

71152127509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 40.

The spelling of 71152127509 in words is "seventy-one billion, one hundred fifty-two million, one hundred twenty-seven thousand, five hundred nine".