44043220642 has 4 divisors (see below), whose sum is σ = 66064830966. Its totient is φ = 22021610320.

The previous prime is 44043220609. The next prime is 44043220649. The reversal of 44043220642 is 24602234044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36057832321 + 7985388321 = 189889^2 + 89361^2 .

It is not an unprimeable number, because it can be changed into a prime (44043220649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010805159 + ... + 11010805162.

Almost surely, 2^44043220642 is an apocalyptic number.

44043220642 is a deficient number, since it is larger than the sum of its proper divisors (22021610324).

44043220642 is a wasteful number, since it uses less digits than its factorization.

44043220642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22021610323.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 44043220642 its reverse (24602234044), we get a palindrome (68645454686).

The spelling of 44043220642 in words is "forty-four billion, forty-three million, two hundred twenty thousand, six hundred forty-two".