44126721661772 has 12 divisors (see below), whose sum is σ = 81764219549880. Its totient is φ = 20765516076096.

The previous prime is 44126721661747. The next prime is 44126721661783. The reversal of 44126721661772 is 27716612762144.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324461188622 + ... + 324461188757.

It is an arithmetic number, because the mean of its divisors is an integer number (6813684962490).

Almost surely, 2^{44126721661772} is an apocalyptic number.

It is an amenable number.

44126721661772 is a deficient number, since it is larger than the sum of its proper divisors (37637497888108).

44126721661772 is a wasteful number, since it uses less digits than its factorization.

44126721661772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648922377400 (or 648922377398 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 56.

The spelling of 44126721661772 in words is "forty-four trillion, one hundred twenty-six billion, seven hundred twenty-one million, six hundred sixty-one thousand, seven hundred seventy-two".