13521113087 has 2 divisors, whose sum is σ = 13521113088. Its totient is φ = 13521113086.

The previous prime is 13521113077. The next prime is 13521113117. The reversal of 13521113087 is 78031112531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13521113087 - 2¹⁸ = 13520850943 is a prime.

It is a super-2 number, since 2×13521113087² (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 (13521113077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760556543 + 6760556544.

It is an arithmetic number, because the mean of its divisors is an integer number (6760556544).

Almost surely, 2^13521113087 is an apocalyptic number.

13521113087 is a deficient number, since it is larger than the sum of its proper divisors (1).

13521113087 is an equidigital number, since it uses as much as digits as its factorization.

13521113087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 13521113087 in words is "thirteen billion, five hundred twenty-one million, one hundred thirteen thousand, eighty-seven".