89560538681 has 4 divisors (see below), whose sum is σ = 89629592052. Its totient is φ = 89491485312.

The previous prime is 89560538671. The next prime is 89560538689. The reversal of 89560538681 is 18683506598.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83555683600 + 6004855081 = 289060^2 + 77491^2 .

It is a cyclic number.

It is not a de Polignac number, because 89560538681 - 2³⁰ = 88486796857 is a prime.

It is a super-2 number, since 2×89560538681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89560538681.

It is not an unprimeable number, because it can be changed into a prime (89560538689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34524740 + ... + 34527333.

It is an arithmetic number, because the mean of its divisors is an integer number (22407398013).

Almost surely, 2^89560538681 is an apocalyptic number.

It is an amenable number.

89560538681 is a deficient number, since it is larger than the sum of its proper divisors (69053371).

89560538681 is a wasteful number, since it uses less digits than its factorization.

89560538681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69053370.

The product of its (nonzero) digits is 12441600, while the sum is 59.

The spelling of 89560538681 in words is "eighty-nine billion, five hundred sixty million, five hundred thirty-eight thousand, six hundred eighty-one".