4444145322021 has 6 divisors (see below), whose sum is σ = 6419321020710. Its totient is φ = 2962763548008.

The previous prime is 4444145321971. The next prime is 4444145322079. The reversal of 4444145322021 is 1202235414444.

4444145322021 is a `hidden beast` number, since 4 + 4 + 4 + 414 + 5 + 32 + 202 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4095608585121 + 348536736900 = 2023761^2 + 590370^2 .

It is not a de Polignac number, because 4444145322021 - 2⁹ = 4444145321509 is a prime.

It is a super-2 number, since 2×4444145322021² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4444145322521) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 246896962326 + ... + 246896962343.

It is an arithmetic number, because the mean of its divisors is an integer number (1069886836785).

Almost surely, 2^{4444145322021} is an apocalyptic number.

It is an amenable number.

4444145322021 is a deficient number, since it is larger than the sum of its proper divisors (1975175698689).

4444145322021 is a wasteful number, since it uses less digits than its factorization.

4444145322021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493793924675 (or 493793924672 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 36.

The spelling of 4444145322021 in words is "four trillion, four hundred forty-four billion, one hundred forty-five million, three hundred twenty-two thousand, twenty-one".