71985000793 has 2 divisors, whose sum is σ = 71985000794. Its totient is φ = 71985000792.

The previous prime is 71985000749. The next prime is 71985000817. The reversal of 71985000793 is 39700058917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65909265984 + 6075734809 = 256728^2 + 77947^2 .

It is an emirp because it is prime and its reverse (39700058917) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71985000793 is a prime.

It is not a weakly prime, because it can be changed into another prime (71985000713) 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, 35992500396 + 35992500397.

It is an arithmetic number, because the mean of its divisors is an integer number (35992500397).

Almost surely, 2^71985000793 is an apocalyptic number.

It is an amenable number.

71985000793 is a deficient number, since it is larger than the sum of its proper divisors (1).

71985000793 is an equidigital number, since it uses as much as digits as its factorization.

71985000793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 71985000793 in words is "seventy-one billion, nine hundred eighty-five million, seven hundred ninety-three", and thus it is an aban number.