488668440289121 has 4 divisors (see below), whose sum is σ = 488668565935812. Its totient is φ = 488668314642432.

The previous prime is 488668440289111. The next prime is 488668440289153. The reversal of 488668440289121 is 121982044866884.

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 485428368288721 + 3240072000400 = 22032439^2 + 1800020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-488668440289121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (488668440289111) 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, 56796800 + ... + 64832193.

It is an arithmetic number, because the mean of its divisors is an integer number (122167141483953).

Almost surely, 2^{488668440289121} is an apocalyptic number.

It is an amenable number.

488668440289121 is a deficient number, since it is larger than the sum of its proper divisors (125646691).

488668440289121 is a wasteful number, since it uses less digits than its factorization.

488668440289121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125646690.

The product of its (nonzero) digits is 339738624, while the sum is 71.

The spelling of 488668440289121 in words is "four hundred eighty-eight trillion, six hundred sixty-eight billion, four hundred forty million, two hundred eighty-nine thousand, one hundred twenty-one".