44546421389 has 2 divisors, whose sum is σ = 44546421390. Its totient is φ = 44546421388.

The previous prime is 44546421313. The next prime is 44546421407. The reversal of 44546421389 is 98312464544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43077002500 + 1469418889 = 207550^2 + 38333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44546421389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44546421589) 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, 22273210694 + 22273210695.

It is an arithmetic number, because the mean of its divisors is an integer number (22273210695).

Almost surely, 2^44546421389 is an apocalyptic number.

It is an amenable number.

44546421389 is a deficient number, since it is larger than the sum of its proper divisors (1).

44546421389 is an equidigital number, since it uses as much as digits as its factorization.

44546421389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 50.

The spelling of 44546421389 in words is "forty-four billion, five hundred forty-six million, four hundred twenty-one thousand, three hundred eighty-nine".