54156535547689 has 2 divisors, whose sum is σ = 54156535547690. Its totient is φ = 54156535547688.

The previous prime is 54156535547651. The next prime is 54156535547713. The reversal of 54156535547689 is 98674553565145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28665316000000 + 25491219547689 = 5354000^2 + 5048883^2 .

It is a cyclic number.

It is not a de Polignac number, because 54156535547689 - 2¹⁷ = 54156535416617 is a prime.

It is not a weakly prime, because it can be changed into another prime (54156535577689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27078267773844 + 27078267773845.

It is an arithmetic number, because the mean of its divisors is an integer number (27078267773845).

Almost surely, 2^{54156535547689} is an apocalyptic number.

It is an amenable number.

54156535547689 is a deficient number, since it is larger than the sum of its proper divisors (1).

54156535547689 is an equidigital number, since it uses as much as digits as its factorization.

54156535547689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600000, while the sum is 73.

The spelling of 54156535547689 in words is "fifty-four trillion, one hundred fifty-six billion, five hundred thirty-five million, five hundred forty-seven thousand, six hundred eighty-nine".