44165684819 has 2 divisors, whose sum is σ = 44165684820. Its totient is φ = 44165684818.

The previous prime is 44165684791. The next prime is 44165684831. The reversal of 44165684819 is 91848656144.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44165684819 is a prime.

It is a super-2 number, since 2×44165684819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44165684839) 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 as a sum of consecutive naturals, namely, 22082842409 + 22082842410.

It is an arithmetic number, because the mean of its divisors is an integer number (22082842410).

Almost surely, 2^44165684819 is an apocalyptic number.

44165684819 is a deficient number, since it is larger than the sum of its proper divisors (1).

44165684819 is an equidigital number, since it uses as much as digits as its factorization.

44165684819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 56.

The spelling of 44165684819 in words is "forty-four billion, one hundred sixty-five million, six hundred eighty-four thousand, eight hundred nineteen".