44480386661 has 4 divisors (see below), whose sum is σ = 47096880012. Its totient is φ = 41863893312.

The previous prime is 44480386631. The next prime is 44480386667. The reversal of 44480386661 is 16668308444.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27559320100 + 16921066561 = 166010^2 + 130081^2 .

It is a cyclic number.

It is not a de Polignac number, because 44480386661 - 2⁶ = 44480386597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44480386667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308246650 + ... + 1308246683.

It is an arithmetic number, because the mean of its divisors is an integer number (11774220003).

Almost surely, 2^44480386661 is an apocalyptic number.

It is an amenable number.

44480386661 is a deficient number, since it is larger than the sum of its proper divisors (2616493351).

44480386661 is a wasteful number, since it uses less digits than its factorization.

44480386661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616493350.

The product of its (nonzero) digits is 2654208, while the sum is 50.

The spelling of 44480386661 in words is "forty-four billion, four hundred eighty million, three hundred eighty-six thousand, six hundred sixty-one".