5561105533500 has 384 divisors, whose sum is σ = 18015133473792. Its totient is φ = 1321557120000.

The previous prime is 5561105533483. The next prime is 5561105533567. The reversal of 5561105533500 is 53355011655.

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, 1417562539 + ... + 1417566461.

It is an arithmetic number, because the mean of its divisors is an integer number (46914410088).

Almost surely, 2^{5561105533500} is an apocalyptic number.

5561105533500 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 5561105533500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9007566736896).

5561105533500 is an abundant number, since it is smaller than the sum of its proper divisors (12454027940292).

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

5561105533500 is a wasteful number, since it uses less digits than its factorization.

5561105533500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630 (or 5618 counting only the distinct ones).

The product of its (nonzero) digits is 168750, while the sum is 39.

The spelling of 5561105533500 in words is "five trillion, five hundred sixty-one billion, one hundred five million, five hundred thirty-three thousand, five hundred".