44416213661 has 4 divisors (see below), whose sum is σ = 44512145472. Its totient is φ = 44320281852.

The previous prime is 44416213631. The next prime is 44416213669. The reversal of 44416213661 is 16631261444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44416213661 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 (44416213669) by changing a digit.

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, 47965211 + ... + 47966136.

It is an arithmetic number, because the mean of its divisors is an integer number (11128036368).

Almost surely, 2^44416213661 is an apocalyptic number.

It is an amenable number.

44416213661 is a deficient number, since it is larger than the sum of its proper divisors (95931811).

44416213661 is an equidigital number, since it uses as much as digits as its factorization.

44416213661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95931810.

The product of its digits is 82944, while the sum is 38.

The spelling of 44416213661 in words is "forty-four billion, four hundred sixteen million, two hundred thirteen thousand, six hundred sixty-one".