54120202353449 has 2 divisors, whose sum is σ = 54120202353450. Its totient is φ = 54120202353448.

The previous prime is 54120202353443. The next prime is 54120202353473. The reversal of 54120202353449 is 94435320202145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41883638667049 + 12236563686400 = 6471757^2 + 3498080^2 .

It is a cyclic number.

It is not a de Polignac number, because 54120202353449 - 2³² = 54115907386153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (54120202353443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27060101176724 + 27060101176725.

It is an arithmetic number, because the mean of its divisors is an integer number (27060101176725).

Almost surely, 2^{54120202353449} is an apocalyptic number.

It is an amenable number.

54120202353449 is a deficient number, since it is larger than the sum of its proper divisors (1).

54120202353449 is an equidigital number, since it uses as much as digits as its factorization.

54120202353449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 54120202353449 in words is "fifty-four trillion, one hundred twenty billion, two hundred two million, three hundred fifty-three thousand, four hundred forty-nine".