71045040615885 has 24 divisors (see below), whose sum is σ = 140736842363520. Its totient is φ = 32477732852832.

The previous prime is 71045040615853. The next prime is 71045040615889. The reversal of 71045040615885 is 58851604054017.

71045040615885 is a `hidden beast` number, since 7 + 1 + 0 + 4 + 5 + 0 + 406 + 158 + 85 = 666.

It is not a de Polignac number, because 71045040615885 - 2⁵ = 71045040615853 is a prime.

It is a super-2 number, since 2×71045040615885² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71045040615889) 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 23 ways as a sum of consecutive naturals, for example, 112769905425 + ... + 112769906054.

It is an arithmetic number, because the mean of its divisors is an integer number (5864035098480).

Almost surely, 2^{71045040615885} is an apocalyptic number.

It is an amenable number.

71045040615885 is a deficient number, since it is larger than the sum of its proper divisors (69691801747635).

71045040615885 is a wasteful number, since it uses less digits than its factorization.

71045040615885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225539811497 (or 225539811494 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 54.

The spelling of 71045040615885 in words is "seventy-one trillion, forty-five billion, forty million, six hundred fifteen thousand, eight hundred eighty-five".