13355121014505 has 12 divisors (see below), whose sum is σ = 23148876425220. Its totient is φ = 7122731207712.

The previous prime is 13355121014461. The next prime is 13355121014507. The reversal of 13355121014505 is 50541012155331.

13355121014505 is a `hidden beast` number, since 1 + 3 + 35 + 5 + 12 + 101 + 4 + 505 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5969358173529 + 7385762840976 = 2443227^2 + 2717676^2 .

It is not a de Polignac number, because 13355121014505 - 2⁷ = 13355121014377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13355121014505.

It is not an unprimeable number, because it can be changed into a prime (13355121014507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148390233450 + ... + 148390233539.

It is an arithmetic number, because the mean of its divisors is an integer number (1929073035435).

Almost surely, 2^{13355121014505} is an apocalyptic number.

13355121014505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13355121014505 is a deficient number, since it is larger than the sum of its proper divisors (9793755410715).

13355121014505 is a wasteful number, since it uses less digits than its factorization.

13355121014505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296780467000 (or 296780466997 counting only the distinct ones).

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

Adding to 13355121014505 its reverse (50541012155331), we get a palindrome (63896133169836).

The spelling of 13355121014505 in words is "thirteen trillion, three hundred fifty-five billion, one hundred twenty-one million, fourteen thousand, five hundred five".