54089811649 has 2 divisors, whose sum is σ = 54089811650. Its totient is φ = 54089811648.

The previous prime is 54089811647. The next prime is 54089811697. The reversal of 54089811649 is 94611898045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53187890625 + 901921024 = 230625^2 + 30032^2 .

It is a cyclic number.

It is not a de Polignac number, because 54089811649 - 2¹ = 54089811647 is a prime.

Together with 54089811647, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 54089811649.

It is not a weakly prime, because it can be changed into another prime (54089811647) 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, 27044905824 + 27044905825.

It is an arithmetic number, because the mean of its divisors is an integer number (27044905825).

Almost surely, 2^54089811649 is an apocalyptic number.

It is an amenable number.

54089811649 is a deficient number, since it is larger than the sum of its proper divisors (1).

54089811649 is an equidigital number, since it uses as much as digits as its factorization.

54089811649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 54089811649 in words is "fifty-four billion, eighty-nine million, eight hundred eleven thousand, six hundred forty-nine".