13446434320655 has 16 divisors (see below), whose sum is σ = 18447431591424. Its totient is φ = 9217108415520.

The previous prime is 13446434320643. The next prime is 13446434320679. The reversal of 13446434320655 is 55602343464431.

It is not a de Polignac number, because 13446434320655 - 2⁴ = 13446434320639 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 68727797 + ... + 68923166.

It is an arithmetic number, because the mean of its divisors is an integer number (1152964474464).

Almost surely, 2^{13446434320655} is an apocalyptic number.

13446434320655 is a deficient number, since it is larger than the sum of its proper divisors (5000997270769).

13446434320655 is a wasteful number, since it uses less digits than its factorization.

13446434320655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137653766.

The product of its (nonzero) digits is 12441600, while the sum is 50.

The spelling of 13446434320655 in words is "thirteen trillion, four hundred forty-six billion, four hundred thirty-four million, three hundred twenty thousand, six hundred fifty-five".