44209140818 has 4 divisors (see below), whose sum is σ = 66313711230. Its totient is φ = 22104570408.

The previous prime is 44209140797. The next prime is 44209140821. The reversal of 44209140818 is 81804190244.

It is a happy number.

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., 32063557969 + 12145582849 = 179063^2 + 110207^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11052285203 + ... + 11052285206.

Almost surely, 2^44209140818 is an apocalyptic number.

44209140818 is a deficient number, since it is larger than the sum of its proper divisors (22104570412).

44209140818 is a wasteful number, since it uses less digits than its factorization.

44209140818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22104570411.

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 44209140818 in words is "forty-four billion, two hundred nine million, one hundred forty thousand, eight hundred eighteen".