549143424341945 has 4 divisors (see below), whose sum is σ = 658972109210340. Its totient is φ = 439314739473552.

The previous prime is 549143424341929. The next prime is 549143424341947.

549143424341945 is nontrivially palindromic in base 10.

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 359239369939321 + 189904054402624 = 18953611^2 + 13780568^2 .

It is a cyclic number.

It is not a de Polignac number, because 549143424341945 - 2⁴ = 549143424341929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (549143424341947) 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, 54914342434190 + ... + 54914342434199.

It is an arithmetic number, because the mean of its divisors is an integer number (164743027302585).

Almost surely, 2^{549143424341945} is an apocalyptic number.

It is an amenable number.

549143424341945 is a deficient number, since it is larger than the sum of its proper divisors (109828684868395).

549143424341945 is a wasteful number, since it uses less digits than its factorization.

549143424341945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109828684868394.

The product of its digits is 149299200, while the sum is 62.

The spelling of 549143424341945 in words is "five hundred forty-nine trillion, one hundred forty-three billion, four hundred twenty-four million, three hundred forty-one thousand, nine hundred forty-five".