89849762578521 has 12 divisors (see below), whose sum is σ = 141581444063280. Its totient is φ = 54454401562680.

The previous prime is 89849762578421. The next prime is 89849762578529. The reversal of 89849762578521 is 12587526794898.

It is a happy number.

89849762578521 is a `hidden beast` number, since 8 + 9 + 8 + 497 + 6 + 2 + 5 + 78 + 52 + 1 = 666.

It is not a de Polignac number, because 89849762578521 - 2¹¹ = 89849762576473 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89849762578529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 453786679591 + ... + 453786679788.

It is an arithmetic number, because the mean of its divisors is an integer number (11798453671940).

Almost surely, 2^{89849762578521} is an apocalyptic number.

It is an amenable number.

89849762578521 is a deficient number, since it is larger than the sum of its proper divisors (51731681484759).

89849762578521 is a wasteful number, since it uses less digits than its factorization.

89849762578521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907573359396 (or 907573359393 counting only the distinct ones).

The product of its digits is 4877107200, while the sum is 81.

The spelling of 89849762578521 in words is "eighty-nine trillion, eight hundred forty-nine billion, seven hundred sixty-two million, five hundred seventy-eight thousand, five hundred twenty-one".