543845412869 has 12 divisors (see below), whose sum is σ = 598339833420. Its totient is φ = 493942310400.

The previous prime is 543845412857. The next prime is 543845412889. The reversal of 543845412869 is 968214548345.

It can be written as a sum of positive squares in 2 ways, for example, as 82584390625 + 461261022244 = 287375^2 + 679162^2 .

It is not a de Polignac number, because 543845412869 - 2²⁰ = 543844364293 is a prime.

It is a super-4 number, since 4×543845412869⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543845412889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1972892 + ... + 2231589.

It is an arithmetic number, because the mean of its divisors is an integer number (49861652785).

Almost surely, 2^543845412869 is an apocalyptic number.

It is an amenable number.

543845412869 is a deficient number, since it is larger than the sum of its proper divisors (54494420551).

543845412869 is a wasteful number, since it uses less digits than its factorization.

543845412869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205572 (or 4205561 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 59.

The spelling of 543845412869 in words is "five hundred forty-three billion, eight hundred forty-five million, four hundred twelve thousand, eight hundred sixty-nine".