219423336545 has 32 divisors (see below), whose sum is σ = 303262444800. Its totient is φ = 149293460736.

The previous prime is 219423336527. The next prime is 219423336571. The reversal of 219423336545 is 545633324912.

It is not a de Polignac number, because 219423336545 - 2¹⁸ = 219423074401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 219423336545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9119591 + ... + 9143619.

It is an arithmetic number, because the mean of its divisors is an integer number (9476951400).

Almost surely, 2^219423336545 is an apocalyptic number.

It is an amenable number.

219423336545 is a deficient number, since it is larger than the sum of its proper divisors (83839108255).

219423336545 is a wasteful number, since it uses less digits than its factorization.

219423336545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26057.

The product of its digits is 2332800, while the sum is 47.

The spelling of 219423336545 in words is "two hundred nineteen billion, four hundred twenty-three million, three hundred thirty-six thousand, five hundred forty-five".