13531155511 has 2 divisors, whose sum is σ = 13531155512. Its totient is φ = 13531155510.

The previous prime is 13531155509. The next prime is 13531155529. The reversal of 13531155511 is 11555113531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13531155511 - 2¹ = 13531155509 is a prime.

It is a super-2 number, since 2×13531155511² (a number of 21 digits) contains 22 as substring.

Together with 13531155509, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531155551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765577755 + 6765577756.

It is an arithmetic number, because the mean of its divisors is an integer number (6765577756).

Almost surely, 2^13531155511 is an apocalyptic number.

13531155511 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531155511 is an equidigital number, since it uses as much as digits as its factorization.

13531155511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5625, while the sum is 31.

The spelling of 13531155511 in words is "thirteen billion, five hundred thirty-one million, one hundred fifty-five thousand, five hundred eleven".