55688654621 has 16 divisors (see below), whose sum is σ = 59159973888. Its totient is φ = 52239264000.

The previous prime is 55688654611. The next prime is 55688654647. The reversal of 55688654621 is 12645688655.

It is a cyclic number.

It is not a de Polignac number, because 55688654621 - 2¹⁸ = 55688392477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55688654611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15045071 + ... + 15048771.

It is an arithmetic number, because the mean of its divisors is an integer number (3697498368).

Almost surely, 2^55688654621 is an apocalyptic number.

It is an amenable number.

55688654621 is a deficient number, since it is larger than the sum of its proper divisors (3471319267).

55688654621 is a wasteful number, since it uses less digits than its factorization.

55688654621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6412.

The product of its digits is 13824000, while the sum is 56.

The spelling of 55688654621 in words is "fifty-five billion, six hundred eighty-eight million, six hundred fifty-four thousand, six hundred twenty-one".