53209649617801 has 2 divisors, whose sum is σ = 53209649617802. Its totient is φ = 53209649617800.

The previous prime is 53209649617717. The next prime is 53209649617819. The reversal of 53209649617801 is 10871694690235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49263272688400 + 3946376929401 = 7018780^2 + 1986549^2 .

It is a cyclic number.

It is not a de Polignac number, because 53209649617801 - 2²⁵ = 53209616063369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53209649617801.

It is not a weakly prime, because it can be changed into another prime (53209649617871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26604824808900 + 26604824808901.

It is an arithmetic number, because the mean of its divisors is an integer number (26604824808901).

It is a 1-persistent number, because it is pandigital, but 2⋅53209649617801 = 106419299235602 is not.

Almost surely, 2^{53209649617801} is an apocalyptic number.

It is an amenable number.

53209649617801 is a deficient number, since it is larger than the sum of its proper divisors (1).

53209649617801 is an equidigital number, since it uses as much as digits as its factorization.

53209649617801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 53209649617801 in words is "fifty-three trillion, two hundred nine billion, six hundred forty-nine million, six hundred seventeen thousand, eight hundred one".