543104466001661 has 4 divisors (see below), whose sum is σ = 543104531474400. Its totient is φ = 543104400528924.

The previous prime is 543104466001639. The next prime is 543104466001673. The reversal of 543104466001661 is 166100664401345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 543104466001661 - 2⁴² = 538706419490557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543104466001961) 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, 18117641 + ... + 37609278.

It is an arithmetic number, because the mean of its divisors is an integer number (135776132868600).

Almost surely, 2^{543104466001661} is an apocalyptic number.

It is an amenable number.

543104466001661 is a deficient number, since it is larger than the sum of its proper divisors (65472739).

543104466001661 is an equidigital number, since it uses as much as digits as its factorization.

543104466001661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65472738.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 543104466001661 in words is "five hundred forty-three trillion, one hundred four billion, four hundred sixty-six million, one thousand, six hundred sixty-one".