89805450897 has 16 divisors (see below), whose sum is σ = 133841796480. Its totient is φ = 59511792816.

The previous prime is 89805450817. The next prime is 89805450949. The reversal of 89805450897 is 79805450898.

It is a happy number.

89805450897 is a `hidden beast` number, since 8 + 9 + 8 + 0 + 545 + 0 + 89 + 7 = 666.

It is not a de Polignac number, because 89805450897 - 2⁷ = 89805450769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89805450817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9953958 + ... + 9962975.

It is an arithmetic number, because the mean of its divisors is an integer number (8365112280).

Almost surely, 2^89805450897 is an apocalyptic number.

It is an amenable number.

89805450897 is a deficient number, since it is larger than the sum of its proper divisors (44036345583).

89805450897 is a wasteful number, since it uses less digits than its factorization.

89805450897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19917109 (or 19917103 counting only the distinct ones).

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

Subtracting from 89805450897 its reverse (79805450898), we obtain a palindrome (9999999999).

The spelling of 89805450897 in words is "eighty-nine billion, eight hundred five million, four hundred fifty thousand, eight hundred ninety-seven".