89464160561 has 4 divisors (see below), whose sum is σ = 89610105972. Its totient is φ = 89318215152.

The previous prime is 89464160497. The next prime is 89464160609. The reversal of 89464160561 is 16506146498.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7306830400 + 82157330161 = 85480^2 + 286631^2 .

It is a cyclic number.

It is not a de Polignac number, because 89464160561 - 2⁶ = 89464160497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89464163561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72971786 + ... + 72973011.

It is an arithmetic number, because the mean of its divisors is an integer number (22402526493).

Almost surely, 2^89464160561 is an apocalyptic number.

It is an amenable number.

89464160561 is a deficient number, since it is larger than the sum of its proper divisors (145945411).

89464160561 is a wasteful number, since it uses less digits than its factorization.

89464160561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145945410.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 89464160561 in words is "eighty-nine billion, four hundred sixty-four million, one hundred sixty thousand, five hundred sixty-one".