543805386841 has 4 divisors (see below), whose sum is σ = 554065865892. Its totient is φ = 533544907792.

The previous prime is 543805386809. The next prime is 543805386863. The reversal of 543805386841 is 148683508345.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148683508345 = 5 ⋅29736701669.

It can be written as a sum of positive squares in 2 ways, for example, as 426827022400 + 116978364441 = 653320^2 + 342021^2 .

It is a cyclic number.

It is not a de Polignac number, because 543805386841 - 2⁵ = 543805386809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543805380841) 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, 5130239446 + ... + 5130239551.

It is an arithmetic number, because the mean of its divisors is an integer number (138516466473).

Almost surely, 2^543805386841 is an apocalyptic number.

It is an amenable number.

543805386841 is a deficient number, since it is larger than the sum of its proper divisors (10260479051).

543805386841 is a wasteful number, since it uses less digits than its factorization.

543805386841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260479050.

The product of its (nonzero) digits is 11059200, while the sum is 55.

The spelling of 543805386841 in words is "five hundred forty-three billion, eight hundred five million, three hundred eighty-six thousand, eight hundred forty-one".