4423021465544 has 32 divisors (see below), whose sum is σ = 9050461849440. Its totient is φ = 2009714860800.

The previous prime is 4423021465543. The next prime is 4423021465579. The reversal of 4423021465544 is 4455641203244.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 4423021465495 and 4423021465504.

It is not an unprimeable number, because it can be changed into a prime (4423021465543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9130577 + ... + 9602784.

It is an arithmetic number, because the mean of its divisors is an integer number (282826932795).

Almost surely, 2^{4423021465544} is an apocalyptic number.

4423021465544 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4423021465544 is an abundant number, since it is smaller than the sum of its proper divisors (4627440383896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4423021465544 is a wasteful number, since it uses less digits than its factorization.

4423021465544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18736061 (or 18736057 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 44.

Adding to 4423021465544 its reverse (4455641203244), we get a palindrome (8878662668788).

The spelling of 4423021465544 in words is "four trillion, four hundred twenty-three billion, twenty-one million, four hundred sixty-five thousand, five hundred forty-four".