55005005000 has 160 divisors (see below), whose sum is σ = 145132542720. Its totient is φ = 19356000000.

The previous prime is 55005004991. The next prime is 55005005017. The reversal of 55005005000 is 50050055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1688870 + ... + 1721130.

It is an arithmetic number, because the mean of its divisors is an integer number (907078392).

Almost surely, 2^55005005000 is an apocalyptic number.

55005005000 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 55005005000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72566271360).

55005005000 is an abundant number, since it is smaller than the sum of its proper divisors (90127537720).

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

55005005000 is a wasteful number, since it uses less digits than its factorization.

55005005000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32329 (or 32310 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 20.

Adding to 55005005000 its reverse (50050055), we get a palindrome (55055055055).

It can be divided in two parts, 5 and 5005005000, that added together give a palindrome (5005005005).

The spelling of 55005005000 in words is "fifty-five billion, five million, five thousand".