54145405109 has 2 divisors, whose sum is σ = 54145405110. Its totient is φ = 54145405108.

The previous prime is 54145405103. The next prime is 54145405133. The reversal of 54145405109 is 90150454145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34687945009 + 19457460100 = 186247^2 + 139490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54145405109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54145405103) 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, 27072702554 + 27072702555.

It is an arithmetic number, because the mean of its divisors is an integer number (27072702555).

Almost surely, 2^54145405109 is an apocalyptic number.

It is an amenable number.

54145405109 is a deficient number, since it is larger than the sum of its proper divisors (1).

54145405109 is an equidigital number, since it uses as much as digits as its factorization.

54145405109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 54145405109 in words is "fifty-four billion, one hundred forty-five million, four hundred five thousand, one hundred nine".