543661712819 has 16 divisors (see below), whose sum is σ = 551536128000. Its totient is φ = 535829384640.

The previous prime is 543661712773. The next prime is 543661712831. The reversal of 543661712819 is 918217166345.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543661712819 is a prime.

It is a super-2 number, since 2×543661712819² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543661702819) 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, 36531422 + ... + 36546300.

It is an arithmetic number, because the mean of its divisors is an integer number (34471008000).

Almost surely, 2^543661712819 is an apocalyptic number.

543661712819 is a deficient number, since it is larger than the sum of its proper divisors (7874415181).

543661712819 is a wasteful number, since it uses less digits than its factorization.

543661712819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16258.

The product of its digits is 2177280, while the sum is 53.

The spelling of 543661712819 in words is "five hundred forty-three billion, six hundred sixty-one million, seven hundred twelve thousand, eight hundred nineteen".