5515351214220 has 144 divisors (see below), whose sum is σ = 16854498880128. Its totient is φ = 1459809638400.

The previous prime is 5515351214167. The next prime is 5515351214227. The reversal of 5515351214220 is 224121535155.

5515351214220 is a `hidden beast` number, since 5 + 51 + 53 + 512 + 1 + 42 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5515351214227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235515952 + ... + 235539368.

It is an arithmetic number, because the mean of its divisors is an integer number (117045131112).

Almost surely, 2^{5515351214220} 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 5515351214220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8427249440064).

5515351214220 is an abundant number, since it is smaller than the sum of its proper divisors (11339147665908).

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

5515351214220 is a wasteful number, since it uses less digits than its factorization.

5515351214220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33120 (or 33115 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 5515351214220 its reverse (224121535155), we get a palindrome (5739472749375).

The spelling of 5515351214220 in words is "five trillion, five hundred fifteen billion, three hundred fifty-one million, two hundred fourteen thousand, two hundred twenty".