44045106681781 has 2 divisors, whose sum is σ = 44045106681782. Its totient is φ = 44045106681780.

The previous prime is 44045106681767. The next prime is 44045106681809. The reversal of 44045106681781 is 18718660154044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32367099045681 + 11678007636100 = 5689209^2 + 3417310^2 .

It is a cyclic number.

It is not a de Polignac number, because 44045106681781 - 2³⁵ = 44010746943413 is a prime.

It is a super-2 number, since 2×44045106681781² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44045106681281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22022553340890 + 22022553340891.

It is an arithmetic number, because the mean of its divisors is an integer number (22022553340891).

Almost surely, 2^{44045106681781} is an apocalyptic number.

It is an amenable number.

44045106681781 is a deficient number, since it is larger than the sum of its proper divisors (1).

44045106681781 is an equidigital number, since it uses as much as digits as its factorization.

44045106681781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 44045106681781 in words is "forty-four trillion, forty-five billion, one hundred six million, six hundred eighty-one thousand, seven hundred eighty-one".