65013262681321 has 4 divisors (see below), whose sum is σ = 65014567092112. Its totient is φ = 65011958270532.

The previous prime is 65013262681253. The next prime is 65013262681369. The reversal of 65013262681321 is 12318626231056.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65013262681321 - 2²³ = 65013254292713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65013262981321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652130631 + ... + 652230316.

It is an arithmetic number, because the mean of its divisors is an integer number (16253641773028).

Almost surely, 2^{65013262681321} is an apocalyptic number.

It is an amenable number.

65013262681321 is a deficient number, since it is larger than the sum of its proper divisors (1304410791).

65013262681321 is a wasteful number, since it uses less digits than its factorization.

65013262681321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304410790.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 65013262681321 in words is "sixty-five trillion, thirteen billion, two hundred sixty-two million, six hundred eighty-one thousand, three hundred twenty-one".