13405504104351 has 112 divisors (see below), whose sum is σ = 21741073205760. Its totient is φ = 8236570224960.

The previous prime is 13405504104331. The next prime is 13405504104359. The reversal of 13405504104351 is 15340140550431.

13405504104351 is a `hidden beast` number, since 1 + 3 + 4 + 0 + 550 + 4 + 10 + 43 + 51 = 666.

It is not a de Polignac number, because 13405504104351 - 2²⁶ = 13405436995487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13405504104359) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 236772036 + ... + 236828646.

Almost surely, 2^{13405504104351} is an apocalyptic number.

13405504104351 is a deficient number, since it is larger than the sum of its proper divisors (8335569101409).

13405504104351 is an equidigital number, since it uses as much as digits as its factorization.

13405504104351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57168 (or 57153 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 13405504104351 its reverse (15340140550431), we get a palindrome (28745644654782).

The spelling of 13405504104351 in words is "thirteen trillion, four hundred five billion, five hundred four million, one hundred four thousand, three hundred fifty-one".