53900543849 has 2 divisors, whose sum is σ = 53900543850. Its totient is φ = 53900543848.

The previous prime is 53900543839. The next prime is 53900543887. The reversal of 53900543849 is 94834500935.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49970131600 + 3930412249 = 223540^2 + 62693^2 .

It is a cyclic number.

It is not a de Polignac number, because 53900543849 - 2¹² = 53900539753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53900543797 and 53900543806.

It is not a weakly prime, because it can be changed into another prime (53900543839) 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, 26950271924 + 26950271925.

It is an arithmetic number, because the mean of its divisors is an integer number (26950271925).

Almost surely, 2^53900543849 is an apocalyptic number.

It is an amenable number.

53900543849 is a deficient number, since it is larger than the sum of its proper divisors (1).

53900543849 is an equidigital number, since it uses as much as digits as its factorization.

53900543849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 53900543849 in words is "fifty-three billion, nine hundred million, five hundred forty-three thousand, eight hundred forty-nine".