404221142445445 has 16 divisors (see below), whose sum is σ = 522382940320752. Its totient is φ = 298498996131840.

The previous prime is 404221142445413. The next prime is 404221142445487. The reversal of 404221142445445 is 544544241122404.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4854451571524 + 399366690873921 = 2203282^2 + 19984161^2 .

It is not a de Polignac number, because 404221142445445 - 2⁵ = 404221142445413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404221142445395 and 404221142445404.

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, 21790252 + ... + 35822581.

It is an arithmetic number, because the mean of its divisors is an integer number (32648933770047).

Almost surely, 2^{404221142445445} is an apocalyptic number.

It is an amenable number.

404221142445445 is a deficient number, since it is larger than the sum of its proper divisors (118161797875307).

404221142445445 is a wasteful number, since it uses less digits than its factorization.

404221142445445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57720792.

The product of its (nonzero) digits is 3276800, while the sum is 46.

Adding to 404221142445445 its reverse (544544241122404), we get a palindrome (948765383567849).

The spelling of 404221142445445 in words is "four hundred four trillion, two hundred twenty-one billion, one hundred forty-two million, four hundred forty-five thousand, four hundred forty-five".