65091581407 has 8 divisors (see below), whose sum is σ = 66037809600. Its totient is φ = 64150969344.

The previous prime is 65091581389. The next prime is 65091581413. The reversal of 65091581407 is 70418519056.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65091581407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65091581417) 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 7 ways as a sum of consecutive naturals, for example, 1380682 + ... + 1427047.

It is an arithmetic number, because the mean of its divisors is an integer number (8254726200).

Almost surely, 2^65091581407 is an apocalyptic number.

65091581407 is a deficient number, since it is larger than the sum of its proper divisors (946228193).

65091581407 is a wasteful number, since it uses less digits than its factorization.

65091581407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808065.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 65091581407 in words is "sixty-five billion, ninety-one million, five hundred eighty-one thousand, four hundred seven".