44001661640459 has 2 divisors, whose sum is σ = 44001661640460. Its totient is φ = 44001661640458.

The previous prime is 44001661640423. The next prime is 44001661640471. The reversal of 44001661640459 is 95404616610044.

It is a happy number.

44001661640459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44001661640459 - 2¹² = 44001661636363 is a prime.

It is a super-2 number, since 2×44001661640459² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44001661640479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22000830820229 + 22000830820230.

It is an arithmetic number, because the mean of its divisors is an integer number (22000830820230).

Almost surely, 2^{44001661640459} is an apocalyptic number.

44001661640459 is a deficient number, since it is larger than the sum of its proper divisors (1).

44001661640459 is an equidigital number, since it uses as much as digits as its factorization.

44001661640459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 44001661640459 in words is "forty-four trillion, one billion, six hundred sixty-one million, six hundred forty thousand, four hundred fifty-nine".