71047996373 has 2 divisors, whose sum is σ = 71047996374. Its totient is φ = 71047996372.

The previous prime is 71047996363. The next prime is 71047996391. The reversal of 71047996373 is 37369974017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69633709924 + 1414286449 = 263882^2 + 37607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71047996373 is a prime.

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 (71047996333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35523998186 + 35523998187.

It is an arithmetic number, because the mean of its divisors is an integer number (35523998187).

Almost surely, 2^71047996373 is an apocalyptic number.

It is an amenable number.

71047996373 is a deficient number, since it is larger than the sum of its proper divisors (1).

71047996373 is an equidigital number, since it uses as much as digits as its factorization.

71047996373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6001128, while the sum is 56.

The spelling of 71047996373 in words is "seventy-one billion, forty-seven million, nine hundred ninety-six thousand, three hundred seventy-three".