65191884681533 has 24 divisors (see below), whose sum is σ = 67012536560256. Its totient is φ = 63419374636800.

The previous prime is 65191884681523. The next prime is 65191884681611. The reversal of 65191884681533 is 33518648819156.

It is not a de Polignac number, because 65191884681533 - 2¹⁰ = 65191884680509 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 (65191884681523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 467721773 + ... + 467861133.

It is an arithmetic number, because the mean of its divisors is an integer number (2792189023344).

Almost surely, 2^{65191884681533} is an apocalyptic number.

It is an amenable number.

65191884681533 is a deficient number, since it is larger than the sum of its proper divisors (1820651878723).

65191884681533 is a wasteful number, since it uses less digits than its factorization.

65191884681533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140465 (or 140422 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 68.

The spelling of 65191884681533 in words is "sixty-five trillion, one hundred ninety-one billion, eight hundred eighty-four million, six hundred eighty-one thousand, five hundred thirty-three".