13506235469 has 2 divisors, whose sum is σ = 13506235470. Its totient is φ = 13506235468.

The previous prime is 13506235459. The next prime is 13506235529. The reversal of 13506235469 is 96453260531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13504764100 + 1471369 = 116210^2 + 1213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13506235469 is a prime.

It is a super-2 number, since 2×13506235469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13506235409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6753117734 + 6753117735.

It is an arithmetic number, because the mean of its divisors is an integer number (6753117735).

Almost surely, 2^13506235469 is an apocalyptic number.

It is an amenable number.

13506235469 is a deficient number, since it is larger than the sum of its proper divisors (1).

13506235469 is an equidigital number, since it uses as much as digits as its factorization.

13506235469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 13506235469 in words is "thirteen billion, five hundred six million, two hundred thirty-five thousand, four hundred sixty-nine".