54666681036161 has 2 divisors, whose sum is σ = 54666681036162. Its totient is φ = 54666681036160.

The previous prime is 54666681036013. The next prime is 54666681036179. The reversal of 54666681036161 is 16163018666645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49223414083600 + 5443266952561 = 7015940^2 + 2333081^2 .

It is a cyclic number.

It is not a de Polignac number, because 54666681036161 - 2³⁴ = 54649501166977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54666681036161.

It is not a weakly prime, because it can be changed into another prime (54666681033161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27333340518080 + 27333340518081.

It is an arithmetic number, because the mean of its divisors is an integer number (27333340518081).

Almost surely, 2^{54666681036161} is an apocalyptic number.

It is an amenable number.

54666681036161 is a deficient number, since it is larger than the sum of its proper divisors (1).

54666681036161 is an equidigital number, since it uses as much as digits as its factorization.

54666681036161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22394880, while the sum is 59.

The spelling of 54666681036161 in words is "fifty-four trillion, six hundred sixty-six billion, six hundred eighty-one million, thirty-six thousand, one hundred sixty-one".