53505538369 has 2 divisors, whose sum is σ = 53505538370. Its totient is φ = 53505538368.

The previous prime is 53505538367. The next prime is 53505538393. The reversal of 53505538369 is 96383550535.

53505538369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53505241344 + 297025 = 231312^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 53505538369 - 2¹ = 53505538367 is a prime.

It is a super-2 number, since 2×53505538369² (a number of 22 digits) contains 22 as substring.

Together with 53505538367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53505538367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26752769184 + 26752769185.

It is an arithmetic number, because the mean of its divisors is an integer number (26752769185).

Almost surely, 2^53505538369 is an apocalyptic number.

It is an amenable number.

53505538369 is a deficient number, since it is larger than the sum of its proper divisors (1).

53505538369 is an equidigital number, since it uses as much as digits as its factorization.

53505538369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290000, while the sum is 52.

The spelling of 53505538369 in words is "fifty-three billion, five hundred five million, five hundred thirty-eight thousand, three hundred sixty-nine".