205055346641 has 4 divisors (see below), whose sum is σ = 205056699300. Its totient is φ = 205053993984.

The previous prime is 205055346637. The next prime is 205055346677. The reversal of 205055346641 is 146643550502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 155475644416 + 49579702225 = 394304^2 + 222665^2 .

It is a cyclic number.

It is not a de Polignac number, because 205055346641 - 2² = 205055346637 is a prime.

It is a super-3 number, since 3×205055346641³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205055346611) 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, 415376 + ... + 763313.

It is an arithmetic number, because the mean of its divisors is an integer number (51264174825).

Almost surely, 2^205055346641 is an apocalyptic number.

It is an amenable number.

205055346641 is a deficient number, since it is larger than the sum of its proper divisors (1352659).

205055346641 is a wasteful number, since it uses less digits than its factorization.

205055346641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352658.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 205055346641 in words is "two hundred five billion, fifty-five million, three hundred forty-six thousand, six hundred forty-one".