53365923209 has 2 divisors, whose sum is σ = 53365923210. Its totient is φ = 53365923208.

The previous prime is 53365923199. The next prime is 53365923217. The reversal of 53365923209 is 90232956335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49030359184 + 4335564025 = 221428^2 + 65845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53365923209 is a prime.

It is not a weakly prime, because it can be changed into another prime (53365926209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26682961604 + 26682961605.

It is an arithmetic number, because the mean of its divisors is an integer number (26682961605).

Almost surely, 2^53365923209 is an apocalyptic number.

It is an amenable number.

53365923209 is a deficient number, since it is larger than the sum of its proper divisors (1).

53365923209 is an equidigital number, since it uses as much as digits as its factorization.

53365923209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1312200, while the sum is 47.

The spelling of 53365923209 in words is "fifty-three billion, three hundred sixty-five million, nine hundred twenty-three thousand, two hundred nine".