489208626681 has 16 divisors (see below), whose sum is σ = 675125703360. Its totient is φ = 314727156800.

The previous prime is 489208626661. The next prime is 489208626703. The reversal of 489208626681 is 186626802984.

It is a cyclic number.

It is not a de Polignac number, because 489208626681 - 2⁹ = 489208626169 is a prime.

It is a super-2 number, since 2×489208626681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (489208626661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1313595 + ... + 1644368.

It is an arithmetic number, because the mean of its divisors is an integer number (42195356460).

Almost surely, 2^489208626681 is an apocalyptic number.

It is an amenable number.

489208626681 is a deficient number, since it is larger than the sum of its proper divisors (185917076679).

489208626681 is a wasteful number, since it uses less digits than its factorization.

489208626681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959896.

The product of its (nonzero) digits is 15925248, while the sum is 60.

The spelling of 489208626681 in words is "four hundred eighty-nine billion, two hundred eight million, six hundred twenty-six thousand, six hundred eighty-one".