89188557066 has 36 divisors (see below), whose sum is σ = 224791569522. Its totient is φ = 25482444624.

The previous prime is 89188557047. The next prime is 89188557067. The reversal of 89188557066 is 66075588198.

89188557066 is a `hidden beast` number, since 8 + 9 + 18 + 8 + 557 + 0 + 66 = 666.

It can be written as a sum of positive squares in only one way, i.e., 76084947225 + 13103609841 = 275835^2 + 114471^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 89188556994 and 89188557012.

It is not an unprimeable number, because it can be changed into a prime (89188557067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50559525 + ... + 50561288.

Almost surely, 2^89188557066 is an apocalyptic number.

89188557066 is an abundant number, since it is smaller than the sum of its proper divisors (135603012456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89188557066 is a wasteful number, since it uses less digits than its factorization.

89188557066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101120835 (or 101120825 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 63.

The spelling of 89188557066 in words is "eighty-nine billion, one hundred eighty-eight million, five hundred fifty-seven thousand, sixty-six".