89658838557 has 6 divisors (see below), whose sum is σ = 129507211262. Its totient is φ = 59772559032.

The previous prime is 89658838513. The next prime is 89658838603. The reversal of 89658838557 is 75583885698.

89658838557 is a `hidden beast` number, since 8 + 9 + 6 + 588 + 38 + 5 + 5 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60844115556 + 28814723001 = 246666^2 + 169749^2 .

It is not a de Polignac number, because 89658838557 - 2¹⁰ = 89658837533 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 (89658838657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4981046578 + ... + 4981046595.

Almost surely, 2^89658838557 is an apocalyptic number.

It is an amenable number.

89658838557 is a deficient number, since it is larger than the sum of its proper divisors (39848372705).

89658838557 is a wasteful number, since it uses less digits than its factorization.

89658838557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9962093179 (or 9962093176 counting only the distinct ones).

The product of its digits is 580608000, while the sum is 72.

The spelling of 89658838557 in words is "eighty-nine billion, six hundred fifty-eight million, eight hundred thirty-eight thousand, five hundred fifty-seven".