65089891321 has 32 divisors (see below), whose sum is σ = 83288217600. Its totient is φ = 50527818432.

The previous prime is 65089891271. The next prime is 65089891327. The reversal of 65089891321 is 12319898056.

It is not a de Polignac number, because 65089891321 - 2⁹ = 65089890809 is a prime.

It is a super-2 number, since 2×65089891321² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65089891327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98616 + ... + 374038.

It is an arithmetic number, because the mean of its divisors is an integer number (2602756800).

Almost surely, 2^65089891321 is an apocalyptic number.

It is an amenable number.

65089891321 is a deficient number, since it is larger than the sum of its proper divisors (18198326279).

65089891321 is a wasteful number, since it uses less digits than its factorization.

65089891321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275510 (or 275496 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 65089891321 in words is "sixty-five billion, eighty-nine million, eight hundred ninety-one thousand, three hundred twenty-one".