5661550650 has 288 divisors, whose sum is σ = 17465310720. Its totient is φ = 1206576000.

The previous prime is 5661550639. The next prime is 5661550651. The reversal of 5661550650 is 560551665.

It is a junction number, because it is equal to n+sod(n) for n = 5661550599 and 5661550608.

It is not an unprimeable number, because it can be changed into a prime (5661550651) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9914865 + ... + 9915435.

It is an arithmetic number, because the mean of its divisors is an integer number (60643440).

Almost surely, 2^5661550650 is an apocalyptic number.

5661550650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5661550650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8732655360).

5661550650 is an abundant number, since it is smaller than the sum of its proper divisors (11803760070).

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

5661550650 is a wasteful number, since it uses less digits than its factorization.

5661550650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 5661550650 is about 75243.2764438126. The cubic root of 5661550650 is about 1782.2903910414.

The spelling of 5661550650 in words is "five billion, six hundred sixty-one million, five hundred fifty thousand, six hundred fifty".