205145633029 has 4 divisors (see below), whose sum is σ = 205962946560. Its totient is φ = 204328319500.

The previous prime is 205145633003. The next prime is 205145633051. The reversal of 205145633029 is 920336541502.

205145633029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 205145633029 - 2⁵ = 205145632997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205145632982 and 205145633000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205145630029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408656389 + ... + 408656890.

It is an arithmetic number, because the mean of its divisors is an integer number (51490736640).

Almost surely, 2^205145633029 is an apocalyptic number.

It is an amenable number.

205145633029 is a deficient number, since it is larger than the sum of its proper divisors (817313531).

205145633029 is an equidigital number, since it uses as much as digits as its factorization.

205145633029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817313530.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 205145633029 in words is "two hundred five billion, one hundred forty-five million, six hundred thirty-three thousand, twenty-nine".