5515043105520 has 640 divisors, whose sum is σ = 20786182099200. Its totient is φ = 1352561172480.

The previous prime is 5515043105437. The next prime is 5515043105531. The reversal of 5515043105520 is 255013405155.

5515043105520 is a `hidden beast` number, since 5 + 5 + 1 + 50 + 43 + 10 + 552 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 639124566 + ... + 639133194.

It is an arithmetic number, because the mean of its divisors is an integer number (32478409530).

Almost surely, 2^{5515043105520} 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 5515043105520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10393091049600).

5515043105520 is an abundant number, since it is smaller than the sum of its proper divisors (15271138993680).

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

5515043105520 is a wasteful number, since it uses less digits than its factorization.

5515043105520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957 (or 8933 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 5515043105520 in words is "five trillion, five hundred fifteen billion, forty-three million, one hundred five thousand, five hundred twenty".