54658685646 has 12 divisors (see below), whose sum is σ = 118427152272. Its totient is φ = 18219561876.

The previous prime is 54658685633. The next prime is 54658685681. The reversal of 54658685646 is 64658685645.

It is a happy number.

54658685646 is a `hidden beast` number, since 5 + 4 + 6 + 5 + 8 + 68 + 564 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1518296806 + ... + 1518296841.

It is an arithmetic number, because the mean of its divisors is an integer number (9868929356).

Almost surely, 2^54658685646 is an apocalyptic number.

54658685646 is an abundant number, since it is smaller than the sum of its proper divisors (63768466626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54658685646 is a wasteful number, since it uses less digits than its factorization.

54658685646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036593655 (or 3036593652 counting only the distinct ones).

The product of its digits is 165888000, while the sum is 63.

Subtracting 54658685646 from its reverse (64658685645), we obtain a palindrome (9999999999).

The spelling of 54658685646 in words is "fifty-four billion, six hundred fifty-eight million, six hundred eighty-five thousand, six hundred forty-six".