543451774505553 has 12 divisors (see below), whose sum is σ = 784990013450448. Its totient is φ = 362299282876440.

The previous prime is 543451774505491. The next prime is 543451774505561. The reversal of 543451774505553 is 355505477154345.

543451774505553 is a `hidden beast` number, since 5 + 4 + 3 + 4 + 5 + 1 + 7 + 74 + 5 + 0 + 5 + 553 = 666.

It is not a de Polignac number, because 543451774505553 - 2¹⁶ = 543451774440017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (543451774505953) 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, 156531463 + ... + 159965628.

It is an arithmetic number, because the mean of its divisors is an integer number (65415834454204).

Almost surely, 2^{543451774505553} is an apocalyptic number.

It is an amenable number.

543451774505553 is a deficient number, since it is larger than the sum of its proper divisors (241538238944895).

543451774505553 is a wasteful number, since it uses less digits than its factorization.

543451774505553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316687884 (or 316687881 counting only the distinct ones).

The product of its (nonzero) digits is 441000000, while the sum is 63.

The spelling of 543451774505553 in words is "five hundred forty-three trillion, four hundred fifty-one billion, seven hundred seventy-four million, five hundred five thousand, five hundred fifty-three".