44444381780023 has 2 divisors, whose sum is σ = 44444381780024. Its totient is φ = 44444381780022.

The previous prime is 44444381779949. The next prime is 44444381780027. The reversal of 44444381780023 is 32008718344444.

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-44444381780023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44444381780027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22222190890011 + 22222190890012.

It is an arithmetic number, because the mean of its divisors is an integer number (22222190890012).

Almost surely, 2^{44444381780023} is an apocalyptic number.

44444381780023 is a deficient number, since it is larger than the sum of its proper divisors (1).

44444381780023 is an equidigital number, since it uses as much as digits as its factorization.

44444381780023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8257536, while the sum is 52.

The spelling of 44444381780023 in words is "forty-four trillion, four hundred forty-four billion, three hundred eighty-one million, seven hundred eighty thousand, twenty-three".