89556571161 has 20 divisors (see below), whose sum is σ = 133904123892. Its totient is φ = 59649896448.

The previous prime is 89556571037. The next prime is 89556571199. The reversal of 89556571161 is 16117565598.

89556571161 is a `hidden beast` number, since 8 + 9 + 5 + 5 + 6 + 571 + 1 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 34989947136 + 54566624025 = 187056^2 + 233595^2 .

It is not a de Polignac number, because 89556571161 - 2⁷ = 89556571033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89556571098 and 89556571107.

It is not an unprimeable number, because it can be changed into a prime (89556571361) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 415080 + ... + 592793.

Almost surely, 2^89556571161 is an apocalyptic number.

89556571161 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

89556571161 is a deficient number, since it is larger than the sum of its proper divisors (44347552731).

89556571161 is a wasteful number, since it uses less digits than its factorization.

89556571161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008982 (or 1008973 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 54.

The spelling of 89556571161 in words is "eighty-nine billion, five hundred fifty-six million, five hundred seventy-one thousand, one hundred sixty-one".