5561666950 has 24 divisors (see below), whose sum is σ = 11822515632. Its totient is φ = 1906857120.

The previous prime is 5561666897. The next prime is 5561666959. The reversal of 5561666950 is 596661655.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 5561666894 and 5561666903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561666959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7944889 + ... + 7945588.

It is an arithmetic number, because the mean of its divisors is an integer number (492604818).

Almost surely, 2^5561666950 is an apocalyptic number.

5561666950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5561666950 is an abundant number, since it is smaller than the sum of its proper divisors (6260848682).

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

5561666950 is a wasteful number, since it uses less digits than its factorization.

5561666950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15890496 (or 15890491 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 49.

The square root of 5561666950 is about 74576.5844618805. The cubic root of 5561666950 is about 1771.7468098811.

The spelling of 5561666950 in words is "five billion, five hundred sixty-one million, six hundred sixty-six thousand, nine hundred fifty".