543404201403121 has 4 divisors (see below), whose sum is σ = 575369154426852. Its totient is φ = 511439248379392.

The previous prime is 543404201403113. The next prime is 543404201403143. The reversal of 543404201403121 is 121304102404345.

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 325515929043600 + 217888272359521 = 18042060^2 + 14761039^2 .

It is not a de Polignac number, because 543404201403121 - 2³ = 543404201403113 is a prime.

It is a super-2 number, since 2×543404201403121² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543404202403121) 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, 15982476511840 + ... + 15982476511873.

It is an arithmetic number, because the mean of its divisors is an integer number (143842288606713).

Almost surely, 2^{543404201403121} is an apocalyptic number.

It is an amenable number.

543404201403121 is a deficient number, since it is larger than the sum of its proper divisors (31964953023731).

543404201403121 is a wasteful number, since it uses less digits than its factorization.

543404201403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31964953023730.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 543404201403121 its reverse (121304102404345), we get a palindrome (664708303807466).

The spelling of 543404201403121 in words is "five hundred forty-three trillion, four hundred four billion, two hundred one million, four hundred three thousand, one hundred twenty-one".