65265672057781 has 8 divisors (see below), whose sum is σ = 70601292715520. Its totient is φ = 59975077735152.

The previous prime is 65265672057779. The next prime is 65265672057893. The reversal of 65265672057781 is 18775027656256.

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

It is a cyclic number.

It is not a de Polignac number, because 65265672057781 - 2¹ = 65265672057779 is a prime.

It is a super-2 number, since 2×65265672057781² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65265672057701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11256580761 + ... + 11256586558.

It is an arithmetic number, because the mean of its divisors is an integer number (8825161589440).

Almost surely, 2^{65265672057781} is an apocalyptic number.

It is an amenable number.

65265672057781 is a deficient number, since it is larger than the sum of its proper divisors (5335620657739).

65265672057781 is a wasteful number, since it uses less digits than its factorization.

65265672057781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22513167555.

The product of its (nonzero) digits is 296352000, while the sum is 67.

The spelling of 65265672057781 in words is "sixty-five trillion, two hundred sixty-five billion, six hundred seventy-two million, fifty-seven thousand, seven hundred eighty-one".