65546542448641 has 4 divisors (see below), whose sum is σ = 65573661417732. Its totient is φ = 65519423479552.

The previous prime is 65546542448591. The next prime is 65546542448657. The reversal of 65546542448641 is 14684424564556.

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 34094680074225 + 31451862374416 = 5839065^2 + 5608196^2 .

It is a cyclic number.

It is not a de Polignac number, because 65546542448641 - 2²¹ = 65546540351489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65546542448041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13559480920 + ... + 13559485753.

It is an arithmetic number, because the mean of its divisors is an integer number (16393415354433).

Almost surely, 2^{65546542448641} is an apocalyptic number.

It is an amenable number.

65546542448641 is a deficient number, since it is larger than the sum of its proper divisors (27118969091).

65546542448641 is a wasteful number, since it uses less digits than its factorization.

65546542448641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27118969090.

The product of its digits is 442368000, while the sum is 64.

The spelling of 65546542448641 in words is "sixty-five trillion, five hundred forty-six billion, five hundred forty-two million, four hundred forty-eight thousand, six hundred forty-one".