205546065004061 has 4 divisors (see below), whose sum is σ = 205570125186432. Its totient is φ = 205522004821692.

The previous prime is 205546065003943. The next prime is 205546065004121. The reversal of 205546065004061 is 160400560645502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205546065004061 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 (205546065004661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12030078371 + ... + 12030095456.

It is an arithmetic number, because the mean of its divisors is an integer number (51392531296608).

Almost surely, 2^{205546065004061} is an apocalyptic number.

It is an amenable number.

205546065004061 is a deficient number, since it is larger than the sum of its proper divisors (24060182371).

205546065004061 is an equidigital number, since it uses as much as digits as its factorization.

205546065004061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24060182370.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 205546065004061 in words is "two hundred five trillion, five hundred forty-six billion, sixty-five million, four thousand, sixty-one".