85938521117 has 8 divisors (see below), whose sum is σ = 86005149432. Its totient is φ = 85871923200.

The previous prime is 85938521113. The next prime is 85938521153. The reversal of 85938521117 is 71112583958.

It can be written as a sum of positive squares in 4 ways, for example, as 147525316 + 85790995801 = 12146^2 + 292901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85938521117 - 2² = 85938521113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85938521113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9941117 + ... + 9949757.

It is an arithmetic number, because the mean of its divisors is an integer number (10750643679).

Almost surely, 2^85938521117 is an apocalyptic number.

It is an amenable number.

85938521117 is a deficient number, since it is larger than the sum of its proper divisors (66628315).

85938521117 is a wasteful number, since it uses less digits than its factorization.

85938521117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15199.

The product of its digits is 604800, while the sum is 50.

The spelling of 85938521117 in words is "eighty-five billion, nine hundred thirty-eight million, five hundred twenty-one thousand, one hundred seventeen".