53505433549 has 2 divisors, whose sum is σ = 53505433550. Its totient is φ = 53505433548.

The previous prime is 53505433547. The next prime is 53505433589. The reversal of 53505433549 is 94533450535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53326355625 + 179077924 = 230925^2 + 13382^2 .

It is a cyclic number.

It is not a de Polignac number, because 53505433549 - 2¹ = 53505433547 is a prime.

Together with 53505433547, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 53505433499 and 53505433508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53505433547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26752716774 + 26752716775.

It is an arithmetic number, because the mean of its divisors is an integer number (26752716775).

Almost surely, 2^53505433549 is an apocalyptic number.

It is an amenable number.

53505433549 is a deficient number, since it is larger than the sum of its proper divisors (1).

53505433549 is an equidigital number, since it uses as much as digits as its factorization.

53505433549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430000, while the sum is 46.

The spelling of 53505433549 in words is "fifty-three billion, five hundred five million, four hundred thirty-three thousand, five hundred forty-nine".