55000278008 has 64 divisors (see below), whose sum is σ = 112825137600. Its totient is φ = 25132598400.

The previous prime is 55000278001. The next prime is 55000278023. The reversal of 55000278008 is 80087200055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000278001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1759685 + ... + 1790667.

It is an arithmetic number, because the mean of its divisors is an integer number (1762892775).

Almost surely, 2^55000278008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55000278008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56412568800).

55000278008 is an abundant number, since it is smaller than the sum of its proper divisors (57824859592).

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

55000278008 is a wasteful number, since it uses less digits than its factorization.

55000278008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31129 (or 31099 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The spelling of 55000278008 in words is "fifty-five billion, two hundred seventy-eight thousand, eight".