421444012504005 has 24 divisors (see below), whose sum is σ = 732289025833560. Its totient is φ = 224220579747840.

The previous prime is 421444012504003. The next prime is 421444012504079. The reversal of 421444012504005 is 500405210444124.

421444012504005 is a `hidden beast` number, since 4 + 2 + 144 + 4 + 0 + 1 + 2 + 504 + 0 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 108780915776481 + 312663096727524 = 10429809^2 + 17682282^2 .

It is not a de Polignac number, because 421444012504005 - 2¹ = 421444012504003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421444012504001) 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, 11449153356 + ... + 11449190165.

It is an arithmetic number, because the mean of its divisors is an integer number (30512042743065).

Almost surely, 2^{421444012504005} is an apocalyptic number.

421444012504005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

421444012504005 is a deficient number, since it is larger than the sum of its proper divisors (310845013329555).

421444012504005 is a wasteful number, since it uses less digits than its factorization.

421444012504005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22898343941 (or 22898343938 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

Adding to 421444012504005 its reverse (500405210444124), we get a palindrome (921849222948129).

The spelling of 421444012504005 in words is "four hundred twenty-one trillion, four hundred forty-four billion, twelve million, five hundred four thousand, five".