55105145101200 has 480 divisors, whose sum is σ = 196789155402240. Its totient is φ = 13099174502400.

The previous prime is 55105145101159. The next prime is 55105145101213. The reversal of 55105145101200 is 210154150155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1818216447 + ... + 1818246753.

It is an arithmetic number, because the mean of its divisors is an integer number (409977407088).

Almost surely, 2^{55105145101200} is an apocalyptic number.

55105145101200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55105145101200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98394577701120).

55105145101200 is an abundant number, since it is smaller than the sum of its proper divisors (141684010301040).

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

55105145101200 is a wasteful number, since it uses less digits than its factorization.

55105145101200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35055 (or 35044 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 30.

Adding to 55105145101200 its reverse (210154150155), we get a palindrome (55315299251355).

The spelling of 55105145101200 in words is "fifty-five trillion, one hundred five billion, one hundred forty-five million, one hundred one thousand, two hundred".