209116146053 has 2 divisors, whose sum is σ = 209116146054. Its totient is φ = 209116146052.

The previous prime is 209116145957. The next prime is 209116146097. The reversal of 209116146053 is 350641611902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183923472769 + 25192673284 = 428863^2 + 158722^2 .

It is a cyclic number.

It is not a de Polignac number, because 209116146053 - 2¹² = 209116141957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 209116145998 and 209116146016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209116166053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104558073026 + 104558073027.

It is an arithmetic number, because the mean of its divisors is an integer number (104558073027).

Almost surely, 2^209116146053 is an apocalyptic number.

It is an amenable number.

209116146053 is a deficient number, since it is larger than the sum of its proper divisors (1).

209116146053 is an equidigital number, since it uses as much as digits as its factorization.

209116146053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

Adding to 209116146053 its reverse (350641611902), we get a palindrome (559757757955).

The spelling of 209116146053 in words is "two hundred nine billion, one hundred sixteen million, one hundred forty-six thousand, fifty-three".