71756494093 has 2 divisors, whose sum is σ = 71756494094. Its totient is φ = 71756494092.

The previous prime is 71756493997. The next prime is 71756494123. The reversal of 71756494093 is 39049465717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42336354564 + 29420139529 = 205758^2 + 171523^2 .

It is an emirp because it is prime and its reverse (39049465717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71756494093 - 2²⁵ = 71722939661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71756434093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35878247046 + 35878247047.

It is an arithmetic number, because the mean of its divisors is an integer number (35878247047).

Almost surely, 2^71756494093 is an apocalyptic number.

It is an amenable number.

71756494093 is a deficient number, since it is larger than the sum of its proper divisors (1).

71756494093 is an equidigital number, since it uses as much as digits as its factorization.

71756494093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 71756494093 in words is "seventy-one billion, seven hundred fifty-six million, four hundred ninety-four thousand, ninety-three".