201254543401 has 4 divisors (see below), whose sum is σ = 213093045972. Its totient is φ = 189416040832.

The previous prime is 201254543393. The next prime is 201254543437. The reversal of 201254543401 is 104345452102.

201254543401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 138979840000 + 62274703401 = 372800^2 + 249549^2 .

It is a cyclic number.

It is not a de Polignac number, because 201254543401 - 2³ = 201254543393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201254543491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5919251260 + ... + 5919251293.

It is an arithmetic number, because the mean of its divisors is an integer number (53273261493).

Almost surely, 2^201254543401 is an apocalyptic number.

It is an amenable number.

201254543401 is a deficient number, since it is larger than the sum of its proper divisors (11838502571).

201254543401 is a wasteful number, since it uses less digits than its factorization.

201254543401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11838502570.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 201254543401 its reverse (104345452102), we get a palindrome (305599995503).

The spelling of 201254543401 in words is "two hundred one billion, two hundred fifty-four million, five hundred forty-three thousand, four hundred one".