89612528545 has 16 divisors (see below), whose sum is σ = 109310802768. Its totient is φ = 70506455040.

The previous prime is 89612528531. The next prime is 89612528563. The reversal of 89612528545 is 54582521698.

It can be written as a sum of positive squares in 8 ways, for example, as 10824529681 + 78787998864 = 104041^2 + 280692^2 .

It is not a de Polignac number, because 89612528545 - 2²⁵ = 89578974113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4484817 + ... + 4504753.

It is an arithmetic number, because the mean of its divisors is an integer number (6831925173).

Almost surely, 2^89612528545 is an apocalyptic number.

It is an amenable number.

89612528545 is a deficient number, since it is larger than the sum of its proper divisors (19698274223).

89612528545 is a wasteful number, since it uses less digits than its factorization.

89612528545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34740.

The product of its digits is 6912000, while the sum is 55.

The spelling of 89612528545 in words is "eighty-nine billion, six hundred twelve million, five hundred twenty-eight thousand, five hundred forty-five".