89009091561 has 8 divisors (see below), whose sum is σ = 127807926400. Its totient is φ = 54774825552.

The previous prime is 89009091559. The next prime is 89009091593. The reversal of 89009091561 is 16519090098.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89009091561 - 2¹ = 89009091559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89009091561.

It is not an unprimeable number, because it can be changed into a prime (89009091161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141142161 + ... + 1141142238.

It is an arithmetic number, because the mean of its divisors is an integer number (15975990800).

Almost surely, 2^89009091561 is an apocalyptic number.

It is an amenable number.

89009091561 is a deficient number, since it is larger than the sum of its proper divisors (38798834839).

89009091561 is a wasteful number, since it uses less digits than its factorization.

89009091561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282284415.

The product of its (nonzero) digits is 174960, while the sum is 48.

The spelling of 89009091561 in words is "eighty-nine billion, nine million, ninety-one thousand, five hundred sixty-one".