205053004015 has 8 divisors (see below), whose sum is σ = 248600343600. Its totient is φ = 162351244032.

The previous prime is 205053004007. The next prime is 205053004073. The reversal of 205053004015 is 510400350502.

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

It is a cyclic number.

It is not a de Polignac number, because 205053004015 - 2³ = 205053004007 is a prime.

It is a super-2 number, since 2×205053004015² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 211394365 + ... + 211395334.

It is an arithmetic number, because the mean of its divisors is an integer number (31075042950).

Almost surely, 2^205053004015 is an apocalyptic number.

205053004015 is a deficient number, since it is larger than the sum of its proper divisors (43547339585).

205053004015 is an equidigital number, since it uses as much as digits as its factorization.

205053004015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422789801.

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 205053004015 its reverse (510400350502), we get a palindrome (715453354517).

The spelling of 205053004015 in words is "two hundred five billion, fifty-three million, four thousand, fifteen".