44106561838181 has 2 divisors, whose sum is σ = 44106561838182. Its totient is φ = 44106561838180.

The previous prime is 44106561838123. The next prime is 44106561838189. The reversal of 44106561838181 is 18183816560144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42280347447556 + 1826214390625 = 6502334^2 + 1351375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44106561838181 is a prime.

It is a super-2 number, since 2×44106561838181² (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 (44106561838189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22053280919090 + 22053280919091.

It is an arithmetic number, because the mean of its divisors is an integer number (22053280919091).

Almost surely, 2^{44106561838181} is an apocalyptic number.

It is an amenable number.

44106561838181 is a deficient number, since it is larger than the sum of its proper divisors (1).

44106561838181 is an equidigital number, since it uses as much as digits as its factorization.

44106561838181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4423680, while the sum is 56.

The spelling of 44106561838181 in words is "forty-four trillion, one hundred six billion, five hundred sixty-one million, eight hundred thirty-eight thousand, one hundred eighty-one".