201254544563 has 4 divisors (see below), whose sum is σ = 201256457688. Its totient is φ = 201252631440.

The previous prime is 201254544497. The next prime is 201254544583. The reversal of 201254544563 is 365445452102.

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 201254544563 - 2²⁰ = 201253495987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201254544563.

It is not an unprimeable number, because it can be changed into a prime (201254544583) 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, 788981 + ... + 1012422.

It is an arithmetic number, because the mean of its divisors is an integer number (50314114422).

Almost surely, 2^201254544563 is an apocalyptic number.

201254544563 is a deficient number, since it is larger than the sum of its proper divisors (1913125).

201254544563 is a wasteful number, since it uses less digits than its factorization.

201254544563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913124.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 201254544563 its reverse (365445452102), we get a palindrome (566699996665).

The spelling of 201254544563 in words is "two hundred one billion, two hundred fifty-four million, five hundred forty-four thousand, five hundred sixty-three".