71681140240999 has 2 divisors, whose sum is σ = 71681140241000. Its totient is φ = 71681140240998.

The previous prime is 71681140240993. The next prime is 71681140241047. The reversal of 71681140240999 is 99904204118617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71681140240999 - 2⁵ = 71681140240967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71681140240993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35840570120499 + 35840570120500.

It is an arithmetic number, because the mean of its divisors is an integer number (35840570120500).

Almost surely, 2^{71681140240999} is an apocalyptic number.

71681140240999 is a deficient number, since it is larger than the sum of its proper divisors (1).

71681140240999 is an equidigital number, since it uses as much as digits as its factorization.

71681140240999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The spelling of 71681140240999 in words is "seventy-one trillion, six hundred eighty-one billion, one hundred forty million, two hundred forty thousand, nine hundred ninety-nine".