89639870061 has 32 divisors (see below), whose sum is σ = 145955969280. Its totient is φ = 47767366656.

The previous prime is 89639869999. The next prime is 89639870083. The reversal of 89639870061 is 16007893698.

It is not a de Polignac number, because 89639870061 - 2¹³ = 89639861869 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 89639869983 and 89639870010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89639870561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1112886 + ... + 1190711.

It is an arithmetic number, because the mean of its divisors is an integer number (4561124040).

Almost surely, 2^89639870061 is an apocalyptic number.

It is an amenable number.

89639870061 is a deficient number, since it is larger than the sum of its proper divisors (56316099219).

89639870061 is a wasteful number, since it uses less digits than its factorization.

89639870061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303733.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 89639870061 in words is "eighty-nine billion, six hundred thirty-nine million, eight hundred seventy thousand, sixty-one".