1356105653405 has 4 divisors (see below), whose sum is σ = 1627326784092. Its totient is φ = 1084884522720.

The previous prime is 1356105653401. The next prime is 1356105653437. The reversal of 1356105653405 is 5043565016531.

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 308590249081 + 1047515404324 = 555509^2 + 1023482^2 .

It is not a de Polignac number, because 1356105653405 - 2² = 1356105653401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356105653401) 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 3 ways as a sum of consecutive naturals, for example, 135610565336 + ... + 135610565345.

It is an arithmetic number, because the mean of its divisors is an integer number (406831696023).

Almost surely, 2^{1356105653405} is an apocalyptic number.

It is an amenable number.

1356105653405 is a deficient number, since it is larger than the sum of its proper divisors (271221130687).

1356105653405 is an equidigital number, since it uses as much as digits as its factorization.

1356105653405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271221130686.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 1356105653405 in words is "one trillion, three hundred fifty-six billion, one hundred five million, six hundred fifty-three thousand, four hundred five".