5561498880 has 720 divisors, whose sum is σ = 23268241920. Its totient is φ = 1242169344.

The previous prime is 5561498879. The next prime is 5561498903. The reversal of 5561498880 is 888941655.

It is a happy number.

5561498880 is a `hidden beast` number, since 556 + 1 + 4 + 9 + 8 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 79 ways as a sum of consecutive naturals, for example, 57334992 + ... + 57335088.

Almost surely, 2^5561498880 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 5561498880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11634120960).

5561498880 is an abundant number, since it is smaller than the sum of its proper divisors (17706743040).

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

5561498880 is an equidigital number, since it uses as much as digits as its factorization.

5561498880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The square root of 5561498880 is about 74575.4576251464. The cubic root of 5561498880 is about 1771.7289626847.

The spelling of 5561498880 in words is "five billion, five hundred sixty-one million, four hundred ninety-eight thousand, eight hundred eighty".