205656050606557 has 8 divisors (see below), whose sum is σ = 218623420136160. Its totient is φ = 192903017763600.

The previous prime is 205656050606551. The next prime is 205656050606561. The reversal of 205656050606557 is 755606050656502.

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 205656050606557 - 2¹⁵ = 205656050573789 is a prime.

It is a super-2 number, since 2×205656050606557² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205656050606551) 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, 53584169683 + ... + 53584173520.

It is an arithmetic number, because the mean of its divisors is an integer number (27327927517020).

Almost surely, 2^{205656050606557} is an apocalyptic number.

It is an amenable number.

205656050606557 is a deficient number, since it is larger than the sum of its proper divisors (12967369529603).

205656050606557 is a wasteful number, since it uses less digits than its factorization.

205656050606557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107168343323.

The product of its (nonzero) digits is 56700000, while the sum is 58.

The spelling of 205656050606557 in words is "two hundred five trillion, six hundred fifty-six billion, fifty million, six hundred six thousand, five hundred fifty-seven".