5606605666251 has 8 divisors (see below), whose sum is σ = 8306082468560. Its totient is φ = 3737737110816.

The previous prime is 5606605666247. The next prime is 5606605666357. The reversal of 5606605666251 is 1526665066065.

It is not a de Polignac number, because 5606605666251 - 2² = 5606605666247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5606605466251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103826030830 + ... + 103826030883.

It is an arithmetic number, because the mean of its divisors is an integer number (1038260308570).

Almost surely, 2^{5606605666251} is an apocalyptic number.

5606605666251 is a deficient number, since it is larger than the sum of its proper divisors (2699476802309).

5606605666251 is a wasteful number, since it uses less digits than its factorization.

5606605666251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207652061722 (or 207652061716 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 54.

The spelling of 5606605666251 in words is "five trillion, six hundred six billion, six hundred five million, six hundred sixty-six thousand, two hundred fifty-one".