71917475543 has 2 divisors, whose sum is σ = 71917475544. Its totient is φ = 71917475542.

The previous prime is 71917475537. The next prime is 71917475593. The reversal of 71917475543 is 34557471917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71917475543 - 2⁶ = 71917475479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71917475593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35958737771 + 35958737772.

It is an arithmetic number, because the mean of its divisors is an integer number (35958737772).

Almost surely, 2^71917475543 is an apocalyptic number.

71917475543 is a deficient number, since it is larger than the sum of its proper divisors (1).

71917475543 is an equidigital number, since it uses as much as digits as its factorization.

71917475543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3704400, while the sum is 53.

The spelling of 71917475543 in words is "seventy-one billion, nine hundred seventeen million, four hundred seventy-five thousand, five hundred forty-three".