53399553653 has 2 divisors, whose sum is σ = 53399553654. Its totient is φ = 53399553652.

The previous prime is 53399553589. The next prime is 53399553667. The reversal of 53399553653 is 35635599335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38475999409 + 14923554244 = 196153^2 + 122162^2 .

It is a cyclic number.

It is not a de Polignac number, because 53399553653 - 2⁶ = 53399553589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53399553673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26699776826 + 26699776827.

It is an arithmetic number, because the mean of its divisors is an integer number (26699776827).

Almost surely, 2^53399553653 is an apocalyptic number.

It is an amenable number.

53399553653 is a deficient number, since it is larger than the sum of its proper divisors (1).

53399553653 is an equidigital number, since it uses as much as digits as its factorization.

53399553653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24603750, while the sum is 56.

The spelling of 53399553653 in words is "fifty-three billion, three hundred ninety-nine million, five hundred fifty-three thousand, six hundred fifty-three".