444024140021 has 32 divisors (see below), whose sum is σ = 569364007680. Its totient is φ = 336159936000.

The previous prime is 444024139991. The next prime is 444024140023. The reversal of 444024140021 is 120041420444.

It is not a de Polignac number, because 444024140021 - 2⁶ = 444024139957 is a prime.

It is a super-2 number, since 2×444024140021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444024140023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1885985 + ... + 2108313.

It is an arithmetic number, because the mean of its divisors is an integer number (17792625240).

Almost surely, 2^444024140021 is an apocalyptic number.

It is an amenable number.

444024140021 is a deficient number, since it is larger than the sum of its proper divisors (125339867659).

444024140021 is a wasteful number, since it uses less digits than its factorization.

444024140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223085.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 444024140021 its reverse (120041420444), we get a palindrome (564065560465).

The spelling of 444024140021 in words is "four hundred forty-four billion, twenty-four million, one hundred forty thousand, twenty-one".