53664745686 has 8 divisors (see below), whose sum is σ = 107329491384. Its totient is φ = 17888248560.

The previous prime is 53664745619. The next prime is 53664745703. The reversal of 53664745686 is 68654746635.

It is a sphenic number, since it is the product of 3 distinct primes.

53664745686 is an admirable number.

It is a super-2 number, since 2×53664745686² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4472062135 + ... + 4472062146.

It is an arithmetic number, because the mean of its divisors is an integer number (13416186423).

Almost surely, 2^53664745686 is an apocalyptic number.

53664745686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

53664745686 is a wasteful number, since it uses less digits than its factorization.

53664745686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8944124286.

The product of its digits is 87091200, while the sum is 60.

The spelling of 53664745686 in words is "fifty-three billion, six hundred sixty-four million, seven hundred forty-five thousand, six hundred eighty-six".