65023113035561 has 4 divisors (see below), whose sum is σ = 65023134695124. Its totient is φ = 65023091376000.

The previous prime is 65023113035473. The next prime is 65023113035591. The reversal of 65023113035561 is 16553031132056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35763019287961 + 29260093747600 = 5980219^2 + 5409260^2 .

It is a cyclic number.

It is not a de Polignac number, because 65023113035561 - 2¹⁸ = 65023112773417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65023113035591) 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 3 ways as a sum of consecutive naturals, for example, 5428880 + ... + 12630081.

It is an arithmetic number, because the mean of its divisors is an integer number (16255783673781).

Almost surely, 2^{65023113035561} is an apocalyptic number.

It is an amenable number.

65023113035561 is a deficient number, since it is larger than the sum of its proper divisors (21659563).

65023113035561 is a wasteful number, since it uses less digits than its factorization.

65023113035561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21659562.

The product of its (nonzero) digits is 243000, while the sum is 41.

The spelling of 65023113035561 in words is "sixty-five trillion, twenty-three billion, one hundred thirteen million, thirty-five thousand, five hundred sixty-one".