44443421220157 has 2 divisors, whose sum is σ = 44443421220158. Its totient is φ = 44443421220156.

The previous prime is 44443421220013. The next prime is 44443421220221. The reversal of 44443421220157 is 75102212434444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23250343503321 + 21193077716836 = 4821861^2 + 4603594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44443421220157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44443421250157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22221710610078 + 22221710610079.

It is an arithmetic number, because the mean of its divisors is an integer number (22221710610079).

Almost surely, 2^{44443421220157} is an apocalyptic number.

It is an amenable number.

44443421220157 is a deficient number, since it is larger than the sum of its proper divisors (1).

44443421220157 is an equidigital number, since it uses as much as digits as its factorization.

44443421220157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 860160, while the sum is 43.

The spelling of 44443421220157 in words is "forty-four trillion, four hundred forty-three billion, four hundred twenty-one million, two hundred twenty thousand, one hundred fifty-seven".