13105435021515 has 24 divisors (see below), whose sum is σ = 22724592291648. Its totient is φ = 6986948446080.

The previous prime is 13105435021513. The next prime is 13105435021561. The reversal of 13105435021515 is 51512053450131.

13105435021515 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 5 + 435 + 0 + 215 + 1 + 5 = 666.

It is not a de Polignac number, because 13105435021515 - 2¹ = 13105435021513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13105435021515.

It is not an unprimeable number, because it can be changed into a prime (13105435021513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54397194 + ... + 54637583.

It is an arithmetic number, because the mean of its divisors is an integer number (946858012152).

Almost surely, 2^{13105435021515} is an apocalyptic number.

13105435021515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13105435021515 is a deficient number, since it is larger than the sum of its proper divisors (9619157270133).

13105435021515 is a wasteful number, since it uses less digits than its factorization.

13105435021515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109037459 (or 109037456 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

Adding to 13105435021515 its reverse (51512053450131), we get a palindrome (64617488471646).

The spelling of 13105435021515 in words is "thirteen trillion, one hundred five billion, four hundred thirty-five million, twenty-one thousand, five hundred fifteen".