54688661693 has 8 divisors (see below), whose sum is σ = 54987007488. Its totient is φ = 54390979584.

The previous prime is 54688661689. The next prime is 54688661707. The reversal of 54688661693 is 39616688645.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 54688661693 - 2² = 54688661689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54688661623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221 + ... + 330722.

It is an arithmetic number, because the mean of its divisors is an integer number (6873375936).

Almost surely, 2^54688661693 is an apocalyptic number.

It is an amenable number.

54688661693 is a deficient number, since it is larger than the sum of its proper divisors (298345795).

54688661693 is a wasteful number, since it uses less digits than its factorization.

54688661693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331843.

The product of its digits is 44789760, while the sum is 62.

The spelling of 54688661693 in words is "fifty-four billion, six hundred eighty-eight million, six hundred sixty-one thousand, six hundred ninety-three".