54544565521669 has 2 divisors, whose sum is σ = 54544565521670. Its totient is φ = 54544565521668.

The previous prime is 54544565521571. The next prime is 54544565521703. The reversal of 54544565521669 is 96612556544545.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54525124796769 + 19440724900 = 7384113^2 + 139430^2 .

It is a cyclic number.

It is not a de Polignac number, because 54544565521669 - 2⁹ = 54544565521157 is a prime.

It is a super-2 number, since 2×54544565521669² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54544565521169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27272282760834 + 27272282760835.

It is an arithmetic number, because the mean of its divisors is an integer number (27272282760835).

Almost surely, 2^{54544565521669} is an apocalyptic number.

It is an amenable number.

54544565521669 is a deficient number, since it is larger than the sum of its proper divisors (1).

54544565521669 is an equidigital number, since it uses as much as digits as its factorization.

54544565521669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600000, while the sum is 67.

The spelling of 54544565521669 in words is "fifty-four trillion, five hundred forty-four billion, five hundred sixty-five million, five hundred twenty-one thousand, six hundred sixty-nine".