205656053161213 has 8 divisors (see below), whose sum is σ = 205749074158200. Its totient is φ = 205563034268928.

The previous prime is 205656053161211. The next prime is 205656053161219. The reversal of 205656053161213 is 312161350656502.

It can be written as a sum of positive squares in 4 ways, for example, as 101510823766564 + 104145229394649 = 10075258^2 + 10205157^2 .

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 205656053161213 - 2¹ = 205656053161211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205656053161211) 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, 214825545 + ... + 215780737.

It is an arithmetic number, because the mean of its divisors is an integer number (25718634269775).

Almost surely, 2^{205656053161213} is an apocalyptic number.

It is an amenable number.

205656053161213 is a deficient number, since it is larger than the sum of its proper divisors (93020996987).

205656053161213 is an equidigital number, since it uses as much as digits as its factorization.

205656053161213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052351.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 205656053161213 in words is "two hundred five trillion, six hundred fifty-six billion, fifty-three million, one hundred sixty-one thousand, two hundred thirteen".