5515550040000 has 4480 divisors, whose sum is σ = 26989934856192. Its totient is φ = 955514880000.

The previous prime is 5515550039959. The next prime is 5515550040019. The reversal of 5515550040000 is 400555155.

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

It is a self number, because there is not a number n which added to its sum of digits gives 5515550040000.

It is a congruent number.

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 639 ways as a sum of consecutive naturals, for example, 75555479964 + ... + 75555480036.

Almost surely, 2^{5515550040000} is an apocalyptic number.

5515550040000 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 5515550040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13494967428096).

5515550040000 is an abundant number, since it is smaller than the sum of its proper divisors (21474384816192).

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

5515550040000 is a wasteful number, since it uses less digits than its factorization.

5515550040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

Adding to 5515550040000 its reverse (400555155), we get a palindrome (5515950595155).

The spelling of 5515550040000 in words is "five trillion, five hundred fifteen billion, five hundred fifty million, forty thousand".