13105405521287 has 2 divisors, whose sum is σ = 13105405521288. Its totient is φ = 13105405521286.

The previous prime is 13105405521283. The next prime is 13105405521401. The reversal of 13105405521287 is 78212550450131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13105405521287 - 2² = 13105405521283 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13105405521283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6552702760643 + 6552702760644.

It is an arithmetic number, because the mean of its divisors is an integer number (6552702760644).

Almost surely, 2^{13105405521287} is an apocalyptic number.

13105405521287 is a deficient number, since it is larger than the sum of its proper divisors (1).

13105405521287 is an equidigital number, since it uses as much as digits as its factorization.

13105405521287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336000, while the sum is 44.

The spelling of 13105405521287 in words is "thirteen trillion, one hundred five billion, four hundred five million, five hundred twenty-one thousand, two hundred eighty-seven".