55163082618 has 256 divisors, whose sum is σ = 149218099200. Its totient is φ = 14775022080.

The previous prime is 55163082593. The next prime is 55163082659. The reversal of 55163082618 is 81628036155.

55163082618 is a `hidden beast` number, since 5 + 5 + 1 + 630 + 8 + 2 + 6 + 1 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 50468880 + ... + 50469972.

It is an arithmetic number, because the mean of its divisors is an integer number (582883200).

Almost surely, 2^55163082618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55163082618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74609049600).

55163082618 is an abundant number, since it is smaller than the sum of its proper divisors (94055016582).

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

55163082618 is a wasteful number, since it uses less digits than its factorization.

55163082618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 55163082618 in words is "fifty-five billion, one hundred sixty-three million, eighty-two thousand, six hundred eighteen".