205000560503 has 4 divisors (see below), whose sum is σ = 205149005448. Its totient is φ = 204852115560.

The previous prime is 205000560497. The next prime is 205000560559. The reversal of 205000560503 is 305065000502.

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

It is a cyclic number.

It is not a de Polignac number, because 205000560503 - 2¹² = 205000556407 is a prime.

It is a super-2 number, since 2×205000560503² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205000560103) 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, 74220401 + ... + 74223162.

It is an arithmetic number, because the mean of its divisors is an integer number (51287251362).

Almost surely, 2^205000560503 is an apocalyptic number.

205000560503 is a deficient number, since it is larger than the sum of its proper divisors (148444945).

205000560503 is a wasteful number, since it uses less digits than its factorization.

205000560503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148444944.

The product of its (nonzero) digits is 4500, while the sum is 26.

The spelling of 205000560503 in words is "two hundred five billion, five hundred sixty thousand, five hundred three".