71868785786265 has 32 divisors (see below), whose sum is σ = 127182350244096. Its totient is φ = 34425297803520.

The previous prime is 71868785786263. The next prime is 71868785786267. The reversal of 71868785786265 is 56268758786817.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71868785786263) and next prime (71868785786267).

It is not a de Polignac number, because 71868785786265 - 2¹ = 71868785786263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71868785786263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4980504621 + ... + 4980519050.

It is an arithmetic number, because the mean of its divisors is an integer number (3974448445128).

Almost surely, 2^{71868785786265} is an apocalyptic number.

It is an amenable number.

71868785786265 is a deficient number, since it is larger than the sum of its proper divisors (55313564457831).

71868785786265 is a wasteful number, since it uses less digits than its factorization.

71868785786265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9961023729.

The product of its digits is 15173222400, while the sum is 84.

The spelling of 71868785786265 in words is "seventy-one trillion, eight hundred sixty-eight billion, seven hundred eighty-five million, seven hundred eighty-six thousand, two hundred sixty-five".