55610610101209 has 2 divisors, whose sum is σ = 55610610101210. Its totient is φ = 55610610101208.

The previous prime is 55610610101071. The next prime is 55610610101213. The reversal of 55610610101209 is 90210101601655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52220813601609 + 3389796499600 = 7226397^2 + 1841140^2 .

It is a cyclic number.

It is not a de Polignac number, because 55610610101209 - 2²¹ = 55610608004057 is a prime.

It is not a weakly prime, because it can be changed into another prime (55610610101009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27805305050604 + 27805305050605.

It is an arithmetic number, because the mean of its divisors is an integer number (27805305050605).

Almost surely, 2^{55610610101209} is an apocalyptic number.

It is an amenable number.

55610610101209 is a deficient number, since it is larger than the sum of its proper divisors (1).

55610610101209 is an equidigital number, since it uses as much as digits as its factorization.

55610610101209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 37.

The spelling of 55610610101209 in words is "fifty-five trillion, six hundred ten billion, six hundred ten million, one hundred one thousand, two hundred nine".