321227454545 has 16 divisors (see below), whose sum is σ = 391863942912. Its totient is φ = 252722842560.

The previous prime is 321227454529. The next prime is 321227454563. The reversal of 321227454545 is 545454722123.

It is not a de Polignac number, because 321227454545 - 2⁴ = 321227454529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321227454496 and 321227454505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1621364 + ... + 1808666.

It is an arithmetic number, because the mean of its divisors is an integer number (24491496432).

Almost surely, 2^321227454545 is an apocalyptic number.

It is an amenable number.

321227454545 is a deficient number, since it is larger than the sum of its proper divisors (70636488367).

321227454545 is a wasteful number, since it uses less digits than its factorization.

321227454545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192992.

The product of its digits is 1344000, while the sum is 44.

The spelling of 321227454545 in words is "three hundred twenty-one billion, two hundred twenty-seven million, four hundred fifty-four thousand, five hundred forty-five".