85438740017907 has 32 divisors (see below), whose sum is σ = 127158485852160. Its totient is φ = 56697061544640.

The previous prime is 85438740017881. The next prime is 85438740017909. The reversal of 85438740017907 is 70971004783458.

85438740017907 is a `hidden beast` number, since 8 + 54 + 3 + 8 + 7 + 400 + 179 + 0 + 7 = 666.

It is not a de Polignac number, because 85438740017907 - 2²² = 85438735823603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85438740017909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50570182 + ... + 52232372.

It is an arithmetic number, because the mean of its divisors is an integer number (3973702682880).

Almost surely, 2^{85438740017907} is an apocalyptic number.

85438740017907 is a deficient number, since it is larger than the sum of its proper divisors (41719745834253).

85438740017907 is a wasteful number, since it uses less digits than its factorization.

85438740017907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670960 (or 1670954 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 63.

The spelling of 85438740017907 in words is "eighty-five trillion, four hundred thirty-eight billion, seven hundred forty million, seventeen thousand, nine hundred seven".