201563440273 has 16 divisors (see below), whose sum is σ = 221136724816. Its totient is φ = 182585456640.

The previous prime is 201563440271. The next prime is 201563440277. The reversal of 201563440273 is 372044365102.

It can be written as a sum of positive squares in 8 ways, for example, as 120137105664 + 81426334609 = 346608^2 + 285353^2 .

It is a cyclic number.

It is not a de Polignac number, because 201563440273 - 2¹ = 201563440271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201563440271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49861 + ... + 636877.

It is an arithmetic number, because the mean of its divisors is an integer number (13821045301).

Almost surely, 2^201563440273 is an apocalyptic number.

It is an amenable number.

201563440273 is a deficient number, since it is larger than the sum of its proper divisors (19573284543).

201563440273 is a wasteful number, since it uses less digits than its factorization.

201563440273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587524.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 201563440273 in words is "two hundred one billion, five hundred sixty-three million, four hundred forty thousand, two hundred seventy-three".