71775736027 has 2 divisors, whose sum is σ = 71775736028. Its totient is φ = 71775736026.

The previous prime is 71775735971. The next prime is 71775736031. The reversal of 71775736027 is 72063757717.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71775736027 is a prime.

It is not a weakly prime, because it can be changed into another prime (71775736127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35887868013 + 35887868014.

It is an arithmetic number, because the mean of its divisors is an integer number (35887868014).

Almost surely, 2^71775736027 is an apocalyptic number.

71775736027 is a deficient number, since it is larger than the sum of its proper divisors (1).

71775736027 is an equidigital number, since it uses as much as digits as its factorization.

71775736027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3025260, while the sum is 52.

The spelling of 71775736027 in words is "seventy-one billion, seven hundred seventy-five million, seven hundred thirty-six thousand, twenty-seven".