201563004645 has 48 divisors (see below), whose sum is σ = 358675100784. Its totient is φ = 104650368000.

The previous prime is 201563004641. The next prime is 201563004647. The reversal of 201563004645 is 546400365102.

201563004645 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 6 + 3 + 0 + 0 + 4 + 645 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 81714796164 + 119848208481 = 285858^2 + 346191^2 .

It is not a de Polignac number, because 201563004645 - 2² = 201563004641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201563004641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 732055 + ... + 969035.

It is an arithmetic number, because the mean of its divisors is an integer number (7472397933).

Almost surely, 2^201563004645 is an apocalyptic number.

It is an amenable number.

201563004645 is a deficient number, since it is larger than the sum of its proper divisors (157112096139).

201563004645 is a wasteful number, since it uses less digits than its factorization.

201563004645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237494 (or 237491 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 201563004645 its reverse (546400365102), we get a palindrome (747963369747).

The spelling of 201563004645 in words is "two hundred one billion, five hundred sixty-three million, four thousand, six hundred forty-five".