54666680686 has 16 divisors (see below), whose sum is σ = 82908091728. Its totient is φ = 27032075200.

The previous prime is 54666680633. The next prime is 54666680693. The reversal of 54666680686 is 68608666645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279295 + ... + 432826.

It is an arithmetic number, because the mean of its divisors is an integer number (5181755733).

Almost surely, 2^54666680686 is an apocalyptic number.

54666680686 is a deficient number, since it is larger than the sum of its proper divisors (28241411042).

54666680686 is a wasteful number, since it uses less digits than its factorization.

54666680686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712547.

The product of its (nonzero) digits is 59719680, while the sum is 61.

The spelling of 54666680686 in words is "fifty-four billion, six hundred sixty-six million, six hundred eighty thousand, six hundred eighty-six".