205299142915 has 8 divisors (see below), whose sum is σ = 246390310368. Its totient is φ = 164218421760.

The previous prime is 205299142903. The next prime is 205299142943. The reversal of 205299142915 is 519241992502.

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

It is not a de Polignac number, because 205299142915 - 2⁷ = 205299142787 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2568271 + ... + 2647000.

It is an arithmetic number, because the mean of its divisors is an integer number (30798788796).

Almost surely, 2^205299142915 is an apocalyptic number.

205299142915 is a deficient number, since it is larger than the sum of its proper divisors (41091167453).

205299142915 is an equidigital number, since it uses as much as digits as its factorization.

205299142915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5223149.

The product of its (nonzero) digits is 583200, while the sum is 49.

The spelling of 205299142915 in words is "two hundred five billion, two hundred ninety-nine million, one hundred forty-two thousand, nine hundred fifteen".