53890866389 has 2 divisors, whose sum is σ = 53890866390. Its totient is φ = 53890866388.

The previous prime is 53890866311. The next prime is 53890866443. The reversal of 53890866389 is 98366809835.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27600838225 + 26290028164 = 166135^2 + 162142^2 .

It is a cyclic number.

It is not a de Polignac number, because 53890866389 - 2¹² = 53890862293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53890826389) 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, 26945433194 + 26945433195.

It is an arithmetic number, because the mean of its divisors is an integer number (26945433195).

Almost surely, 2^53890866389 is an apocalyptic number.

It is an amenable number.

53890866389 is a deficient number, since it is larger than the sum of its proper divisors (1).

53890866389 is an equidigital number, since it uses as much as digits as its factorization.

53890866389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67184640, while the sum is 65.

The spelling of 53890866389 in words is "fifty-three billion, eight hundred ninety million, eight hundred sixty-six thousand, three hundred eighty-nine".