13673455521445 has 8 divisors (see below), whose sum is σ = 16512657114744. Its totient is φ = 10869090757824.

The previous prime is 13673455521409. The next prime is 13673455521529. The reversal of 13673455521445 is 54412555437631.

It can be written as a sum of positive squares in 4 ways, for example, as 2012309636481 + 11661145884964 = 1418559^2 + 3414842^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13673455521445 - 2⁷ = 13673455521317 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 7 ways as a sum of consecutive naturals, for example, 8709206554 + ... + 8709208123.

It is an arithmetic number, because the mean of its divisors is an integer number (2064082139343).

Almost surely, 2^{13673455521445} is an apocalyptic number.

It is an amenable number.

13673455521445 is a deficient number, since it is larger than the sum of its proper divisors (2839201593299).

13673455521445 is a wasteful number, since it uses less digits than its factorization.

13673455521445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17418414839.

The product of its digits is 30240000, while the sum is 55.

The spelling of 13673455521445 in words is "thirteen trillion, six hundred seventy-three billion, four hundred fifty-five million, five hundred twenty-one thousand, four hundred forty-five".