89178011117 has 4 divisors (see below), whose sum is σ = 96037858140. Its totient is φ = 82318164096.

The previous prime is 89178011047. The next prime is 89178011161. The reversal of 89178011117 is 71111087198.

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 40148537641 + 49029473476 = 200371^2 + 221426^2 .

It is a cyclic number.

It is not a de Polignac number, because 89178011117 - 2²² = 89173816813 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 (89178011177) 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, 3429923492 + ... + 3429923517.

It is an arithmetic number, because the mean of its divisors is an integer number (24009464535).

Almost surely, 2^89178011117 is an apocalyptic number.

It is an amenable number.

89178011117 is a deficient number, since it is larger than the sum of its proper divisors (6859847023).

89178011117 is a wasteful number, since it uses less digits than its factorization.

89178011117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6859847022.

The product of its (nonzero) digits is 28224, while the sum is 44.

The spelling of 89178011117 in words is "eighty-nine billion, one hundred seventy-eight million, eleven thousand, one hundred seventeen".