89681204433487 has 4 divisors (see below), whose sum is σ = 89681252121136. Its totient is φ = 89681156745840.

The previous prime is 89681204433467. The next prime is 89681204433629. The reversal of 89681204433487 is 78433440218698.

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

It is a cyclic number.

It is not a de Polignac number, because 89681204433487 - 2¹⁵ = 89681204400719 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 (89681204433467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20901939 + ... + 24824452.

It is an arithmetic number, because the mean of its divisors is an integer number (22420313030284).

Almost surely, 2^{89681204433487} is an apocalyptic number.

89681204433487 is a deficient number, since it is larger than the sum of its proper divisors (47687649).

89681204433487 is a wasteful number, since it uses less digits than its factorization.

89681204433487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47687648.

The product of its (nonzero) digits is 222953472, while the sum is 67.

The spelling of 89681204433487 in words is "eighty-nine trillion, six hundred eighty-one billion, two hundred four million, four hundred thirty-three thousand, four hundred eighty-seven".