5561118931368 has 512 divisors, whose sum is σ = 19675818086400. Its totient is φ = 1261445529600.

The previous prime is 5561118931367. The next prime is 5561118931439. The reversal of 5561118931368 is 8631398111655.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (5561118931367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 352832608 + ... + 352848368.

It is an arithmetic number, because the mean of its divisors is an integer number (38429332200).

Almost surely, 2^{5561118931368} 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 5561118931368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9837909043200).

5561118931368 is an abundant number, since it is smaller than the sum of its proper divisors (14114699155032).

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

5561118931368 is a wasteful number, since it uses less digits than its factorization.

5561118931368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16593 (or 16589 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 57.

The spelling of 5561118931368 in words is "five trillion, five hundred sixty-one billion, one hundred eighteen million, nine hundred thirty-one thousand, three hundred sixty-eight".