54110865409 has 2 divisors, whose sum is σ = 54110865410. Its totient is φ = 54110865408.

The previous prime is 54110865407. The next prime is 54110865469. The reversal of 54110865409 is 90456801145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54102760000 + 8105409 = 232600^2 + 2847^2 .

It is a cyclic number.

It is not a de Polignac number, because 54110865409 - 2¹ = 54110865407 is a prime.

Together with 54110865407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (54110865407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27055432704 + 27055432705.

It is an arithmetic number, because the mean of its divisors is an integer number (27055432705).

Almost surely, 2^54110865409 is an apocalyptic number.

It is an amenable number.

54110865409 is a deficient number, since it is larger than the sum of its proper divisors (1).

54110865409 is an equidigital number, since it uses as much as digits as its factorization.

54110865409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 54110865409 in words is "fifty-four billion, one hundred ten million, eight hundred sixty-five thousand, four hundred nine".