591144045550201 has 16 divisors (see below), whose sum is σ = 695026366328448. Its totient is φ = 495682462137600.

The previous prime is 591144045550169. The next prime is 591144045550213. The reversal of 591144045550201 is 102055540441195.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 591144045550201 - 2⁵ = 591144045550169 is a prime.

It is a super-2 number, since 2×591144045550201² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (591144045550231) 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, 1593443845 + ... + 1593814786.

It is an arithmetic number, because the mean of its divisors is an integer number (43439147895528).

Almost surely, 2^{591144045550201} is an apocalyptic number.

It is an amenable number.

591144045550201 is a deficient number, since it is larger than the sum of its proper divisors (103882320778247).

591144045550201 is a wasteful number, since it uses less digits than its factorization.

591144045550201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187259952.

The product of its (nonzero) digits is 720000, while the sum is 46.

Adding to 591144045550201 its reverse (102055540441195), we get a palindrome (693199585991396).

The spelling of 591144045550201 in words is "five hundred ninety-one trillion, one hundred forty-four billion, forty-five million, five hundred fifty thousand, two hundred one".