55388685166885 has 16 divisors (see below), whose sum is σ = 77249110550400. Its totient is φ = 37337070096576.

The previous prime is 55388685166873. The next prime is 55388685166901. The reversal of 55388685166885 is 58866158688355.

It is a cyclic number.

It is not a de Polignac number, because 55388685166885 - 2¹⁹ = 55388684642597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55388685166799 and 55388685166808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13411301850 + ... + 13411305979.

It is an arithmetic number, because the mean of its divisors is an integer number (4828069409400).

Almost surely, 2^{55388685166885} is an apocalyptic number.

It is an amenable number.

55388685166885 is a deficient number, since it is larger than the sum of its proper divisors (21860425383515).

55388685166885 is a wasteful number, since it uses less digits than its factorization.

55388685166885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26822607900.

The product of its digits is 13271040000, while the sum is 82.

The spelling of 55388685166885 in words is "fifty-five trillion, three hundred eighty-eight billion, six hundred eighty-five million, one hundred sixty-six thousand, eight hundred eighty-five".