404021425320055 has 16 divisors (see below), whose sum is σ = 492452751047040. Its totient is φ = 318140109932832.

The previous prime is 404021425320031. The next prime is 404021425320077. The reversal of 404021425320055 is 550023524120404.

It is a cyclic number.

It is not a de Polignac number, because 404021425320055 - 2⁷ = 404021425319927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404021425319996 and 404021425320023.

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, 478543329 + ... + 479386858.

It is an arithmetic number, because the mean of its divisors is an integer number (30778296940440).

Almost surely, 2^{404021425320055} is an apocalyptic number.

404021425320055 is a deficient number, since it is larger than the sum of its proper divisors (88431325726985).

404021425320055 is a wasteful number, since it uses less digits than its factorization.

404021425320055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957931518.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 404021425320055 its reverse (550023524120404), we get a palindrome (954044949440459).

The spelling of 404021425320055 in words is "four hundred four trillion, twenty-one billion, four hundred twenty-five million, three hundred twenty thousand, fifty-five".