54678684589 has 2 divisors, whose sum is σ = 54678684590. Its totient is φ = 54678684588.

The previous prime is 54678684583. The next prime is 54678684617. The reversal of 54678684589 is 98548687645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43509788100 + 11168896489 = 208590^2 + 105683^2 .

It is a cyclic number.

It is not a de Polignac number, because 54678684589 - 2³ = 54678684581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54678684581) 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 as a sum of consecutive naturals, namely, 27339342294 + 27339342295.

It is an arithmetic number, because the mean of its divisors is an integer number (27339342295).

Almost surely, 2^54678684589 is an apocalyptic number.

It is an amenable number.

54678684589 is a deficient number, since it is larger than the sum of its proper divisors (1).

54678684589 is an equidigital number, since it uses as much as digits as its factorization.

54678684589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 464486400, while the sum is 70.

The spelling of 54678684589 in words is "fifty-four billion, six hundred seventy-eight million, six hundred eighty-four thousand, five hundred eighty-nine".