71057047553 has 2 divisors, whose sum is σ = 71057047554. Its totient is φ = 71057047552.

The previous prime is 71057047531. The next prime is 71057047591. The reversal of 71057047553 is 35574075017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65811232369 + 5245815184 = 256537^2 + 72428^2 .

It is a cyclic number.

It is not a de Polignac number, because 71057047553 - 2⁶ = 71057047489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (71057047753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35528523776 + 35528523777.

It is an arithmetic number, because the mean of its divisors is an integer number (35528523777).

Almost surely, 2^71057047553 is an apocalyptic number.

It is an amenable number.

71057047553 is a deficient number, since it is larger than the sum of its proper divisors (1).

71057047553 is an equidigital number, since it uses as much as digits as its factorization.

71057047553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 514500, while the sum is 44.

The spelling of 71057047553 in words is "seventy-one billion, fifty-seven million, forty-seven thousand, five hundred fifty-three".