44001661640423 has 2 divisors, whose sum is σ = 44001661640424. Its totient is φ = 44001661640422.

The previous prime is 44001661640413. The next prime is 44001661640459. The reversal of 44001661640423 is 32404616610044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44001661640423 - 2⁶ = 44001661640359 is a prime.

It is a super-2 number, since 2×44001661640423² (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 (44001661640413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22000830820211 + 22000830820212.

It is an arithmetic number, because the mean of its divisors is an integer number (22000830820212).

Almost surely, 2^{44001661640423} is an apocalyptic number.

44001661640423 is a deficient number, since it is larger than the sum of its proper divisors (1).

44001661640423 is an equidigital number, since it uses as much as digits as its factorization.

44001661640423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 44001661640423 in words is "forty-four trillion, one billion, six hundred sixty-one million, six hundred forty thousand, four hundred twenty-three".