71489516519 has 2 divisors, whose sum is σ = 71489516520. Its totient is φ = 71489516518.

The previous prime is 71489516491. The next prime is 71489516551. The reversal of 71489516519 is 91561598417.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71489516519 is a prime.

It is a super-2 number, since 2×71489516519² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71489516569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35744758259 + 35744758260.

It is an arithmetic number, because the mean of its divisors is an integer number (35744758260).

Almost surely, 2^71489516519 is an apocalyptic number.

71489516519 is a deficient number, since it is larger than the sum of its proper divisors (1).

71489516519 is an equidigital number, since it uses as much as digits as its factorization.

71489516519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 56.

The spelling of 71489516519 in words is "seventy-one billion, four hundred eighty-nine million, five hundred sixteen thousand, five hundred nineteen".