205135645214 has 8 divisors (see below), whose sum is σ = 323898387240. Its totient is φ = 97169516136.

The previous prime is 205135645213. The next prime is 205135645279. The reversal of 205135645214 is 412546531502.

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

It is a super-2 number, since 2×205135645214² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 5398306453 = 205135645214 / (2 + 0 + 5 + 1 + 3 + 5 + 6 + 4 + 5 + 2 + 1 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205135645213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2699153189 + ... + 2699153264.

It is an arithmetic number, because the mean of its divisors is an integer number (40487298405).

Almost surely, 2^205135645214 is an apocalyptic number.

205135645214 is a deficient number, since it is larger than the sum of its proper divisors (118762742026).

205135645214 is a wasteful number, since it uses less digits than its factorization.

205135645214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5398306474.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 205135645214 in words is "two hundred five billion, one hundred thirty-five million, six hundred forty-five thousand, two hundred fourteen".