89895243645 has 12 divisors (see below), whose sum is σ = 155818422396. Its totient is φ = 47944129920.

The previous prime is 89895243611. The next prime is 89895243649. The reversal of 89895243645 is 54634259898.

89895243645 is a `hidden beast` number, since 89 + 89 + 5 + 2 + 436 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35450488089 + 54444755556 = 188283^2 + 233334^2 .

It is not a de Polignac number, because 89895243645 - 2⁹ = 89895243133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89895243649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 998835996 + ... + 998836085.

It is an arithmetic number, because the mean of its divisors is an integer number (12984868533).

Almost surely, 2^89895243645 is an apocalyptic number.

It is an amenable number.

89895243645 is a deficient number, since it is larger than the sum of its proper divisors (65923178751).

89895243645 is a wasteful number, since it uses less digits than its factorization.

89895243645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997672092 (or 1997672089 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 63.

The spelling of 89895243645 in words is "eighty-nine billion, eight hundred ninety-five million, two hundred forty-three thousand, six hundred forty-five".