55111050510606 has 96 divisors (see below), whose sum is σ = 123110616110976. Its totient is φ = 17804553624000.

The previous prime is 55111050510587. The next prime is 55111050510617. The reversal of 55111050510606 is 60601505011155.

It is a happy number.

55111050510606 is a `hidden beast` number, since 551 + 1 + 1 + 0 + 50 + 51 + 0 + 6 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 258035521 + ... + 258249011.

It is an arithmetic number, because the mean of its divisors is an integer number (1282402251156).

Almost surely, 2^{55111050510606} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55111050510606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61555308055488).

55111050510606 is an abundant number, since it is smaller than the sum of its proper divisors (67999565600370).

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

55111050510606 is a wasteful number, since it uses less digits than its factorization.

55111050510606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215038 (or 215035 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 55111050510606 in words is "fifty-five trillion, one hundred eleven billion, fifty million, five hundred ten thousand, six hundred six".