71615859124991 has 2 divisors, whose sum is σ = 71615859124992. Its totient is φ = 71615859124990.

The previous prime is 71615859124963. The next prime is 71615859125077. The reversal of 71615859124991 is 19942195851617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71615859124991 - 2²⁶ = 71615792016127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71615859114991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35807929562495 + 35807929562496.

It is an arithmetic number, because the mean of its divisors is an integer number (35807929562496).

Almost surely, 2^{71615859124991} is an apocalyptic number.

71615859124991 is a deficient number, since it is larger than the sum of its proper divisors (1).

71615859124991 is an equidigital number, since it uses as much as digits as its factorization.

71615859124991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48988800, while the sum is 68.

The spelling of 71615859124991 in words is "seventy-one trillion, six hundred fifteen billion, eight hundred fifty-nine million, one hundred twenty-four thousand, nine hundred ninety-one".