71815061021299 has 2 divisors, whose sum is σ = 71815061021300. Its totient is φ = 71815061021298.

The previous prime is 71815061021261. The next prime is 71815061021309. The reversal of 71815061021299 is 99212016051817.

It is a strong prime.

It is an emirp because it is prime and its reverse (99212016051817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71815061021299 - 2²⁹ = 71814524150387 is a prime.

It is not a weakly prime, because it can be changed into another prime (71815061025299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35907530510649 + 35907530510650.

It is an arithmetic number, because the mean of its divisors is an integer number (35907530510650).

Almost surely, 2^{71815061021299} is an apocalyptic number.

71815061021299 is a deficient number, since it is larger than the sum of its proper divisors (1).

71815061021299 is an equidigital number, since it uses as much as digits as its factorization.

71815061021299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 52.

The spelling of 71815061021299 in words is "seventy-one trillion, eight hundred fifteen billion, sixty-one million, twenty-one thousand, two hundred ninety-nine".