13455388187405 has 4 divisors (see below), whose sum is σ = 16146465824892. Its totient is φ = 10764310549920.

The previous prime is 13455388187333. The next prime is 13455388187459. The reversal of 13455388187405 is 50478188355431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7390383612676 + 6065004574729 = 2718526^2 + 2462723^2 .

It is not a de Polignac number, because 13455388187405 - 2²² = 13455383993101 is a prime.

It is a super-2 number, since 2×13455388187405² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345538818736 + ... + 1345538818745.

It is an arithmetic number, because the mean of its divisors is an integer number (4036616456223).

Almost surely, 2^{13455388187405} is an apocalyptic number.

It is an amenable number.

13455388187405 is a deficient number, since it is larger than the sum of its proper divisors (2691077637487).

13455388187405 is an equidigital number, since it uses as much as digits as its factorization.

13455388187405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691077637486.

The product of its (nonzero) digits is 64512000, while the sum is 62.

The spelling of 13455388187405 in words is "thirteen trillion, four hundred fifty-five billion, three hundred eighty-eight million, one hundred eighty-seven thousand, four hundred five".