65418891873 has 8 divisors (see below), whose sum is σ = 87407289600. Its totient is φ = 43521544368.

The previous prime is 65418891799. The next prime is 65418891929. The reversal of 65418891873 is 37819881456.

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

It is not a de Polignac number, because 65418891873 - 2⁹ = 65418891361 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (65418891073) 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 7 ways as a sum of consecutive naturals, for example, 22760878 + ... + 22763751.

It is an arithmetic number, because the mean of its divisors is an integer number (10925911200).

Almost surely, 2^65418891873 is an apocalyptic number.

It is an amenable number.

65418891873 is a deficient number, since it is larger than the sum of its proper divisors (21988397727).

65418891873 is a wasteful number, since it uses less digits than its factorization.

65418891873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45525111.

The product of its digits is 11612160, while the sum is 60.

The spelling of 65418891873 in words is "sixty-five billion, four hundred eighteen million, eight hundred ninety-one thousand, eight hundred seventy-three".