44555566669 has 2 divisors, whose sum is σ = 44555566670. Its totient is φ = 44555566668.

The previous prime is 44555566661. The next prime is 44555566697. The reversal of 44555566669 is 96666555544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40065226569 + 4490340100 = 200163^2 + 67010^2 .

It is a cyclic number.

It is not a de Polignac number, because 44555566669 - 2³ = 44555566661 is a prime.

It is a super-2 number, since 2×44555566669² (a number of 22 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44555566661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22277783334 + 22277783335.

It is an arithmetic number, because the mean of its divisors is an integer number (22277783335).

Almost surely, 2^44555566669 is an apocalyptic number.

It is an amenable number.

44555566669 is a deficient number, since it is larger than the sum of its proper divisors (1).

44555566669 is an equidigital number, since it uses as much as digits as its factorization.

44555566669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640000, while the sum is 61.

The spelling of 44555566669 in words is "forty-four billion, five hundred fifty-five million, five hundred sixty-six thousand, six hundred sixty-nine".