44066722138 has 4 divisors (see below), whose sum is σ = 66100083210. Its totient is φ = 22033361068.

The previous prime is 44066722099. The next prime is 44066722169. The reversal of 44066722138 is 83122766044.

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., 35233917849 + 8832804289 = 187707^2 + 93983^2 .

It is a junction number, because it is equal to n+sod(n) for n = 44066722094 and 44066722103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11016680533 + ... + 11016680536.

Almost surely, 2^44066722138 is an apocalyptic number.

44066722138 is a deficient number, since it is larger than the sum of its proper divisors (22033361072).

44066722138 is a wasteful number, since it uses less digits than its factorization.

44066722138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22033361071.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 44066722138 in words is "forty-four billion, sixty-six million, seven hundred twenty-two thousand, one hundred thirty-eight".