89999999999999 has 8 divisors (see below), whose sum is σ = 90026916576768. Its totient is φ = 89973084300120.

The previous prime is 89999999999993. The next prime is 90000000000077. The reversal of 89999999999999 is 99999999999998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89999999999999 - 2¹² = 89999999995903 is a prime.

It is a super-9 number, since 9×89999999999999⁹ (a number of 127 digits) contains 999999999 as substring.

It is a Duffinian number.

89999999999999 is a modest number, since divided by 9999999 gives 8999999 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89999999999993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246074834 + ... + 246440304.

It is an arithmetic number, because the mean of its divisors is an integer number (11253364572096).

Almost surely, 2^{89999999999999} is an apocalyptic number.

89999999999999 is a deficient number, since it is larger than the sum of its proper divisors (26916576769).

89999999999999 is a wasteful number, since it uses less digits than its factorization.

89999999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438445.

The product of its digits is 20334926626632, while the sum is 125.

Subtracting 89999999999999 from its reverse (99999999999998), we obtain a palindrome (9999999999999).

The spelling of 89999999999999 in words is "eighty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".