5666051651557 has 8 divisors (see below), whose sum is σ = 6394290265440. Its totient is φ = 4973336872560.

The previous prime is 5666051651549. The next prime is 5666051651581. The reversal of 5666051651557 is 7551561506665.

It is a happy number.

5666051651557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5666051651557 - 2³ = 5666051651549 is a prime.

It is a super-2 number, since 2×5666051651557² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666051651597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8880958383 + ... + 8880959020.

It is an arithmetic number, because the mean of its divisors is an integer number (799286283180).

Almost surely, 2^{5666051651557} is an apocalyptic number.

It is an amenable number.

5666051651557 is a deficient number, since it is larger than the sum of its proper divisors (728238613883).

5666051651557 is a wasteful number, since it uses less digits than its factorization.

5666051651557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17761917443.

The product of its (nonzero) digits is 28350000, while the sum is 58.

The spelling of 5666051651557 in words is "five trillion, six hundred sixty-six billion, fifty-one million, six hundred fifty-one thousand, five hundred fifty-seven".