400204014420321 has 24 divisors (see below), whose sum is σ = 583505347407840. Its totient is φ = 264302325892800.

The previous prime is 400204014420319. The next prime is 400204014420373. The reversal of 400204014420321 is 123024410402004.

400204014420321 is a `hidden beast` number, since 4 + 0 + 0 + 204 + 0 + 1 + 4 + 420 + 32 + 1 = 666.

It is not a de Polignac number, because 400204014420321 - 2¹ = 400204014420319 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420204014420321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 296562876 + ... + 297909293.

It is an arithmetic number, because the mean of its divisors is an integer number (24312722808660).

Almost surely, 2^{400204014420321} is an apocalyptic number.

It is an amenable number.

400204014420321 is a deficient number, since it is larger than the sum of its proper divisors (183301332987519).

400204014420321 is a wasteful number, since it uses less digits than its factorization.

400204014420321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594472877 (or 594472874 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 400204014420321 its reverse (123024410402004), we get a palindrome (523228424822325).

The spelling of 400204014420321 in words is "four hundred trillion, two hundred four billion, fourteen million, four hundred twenty thousand, three hundred twenty-one".