44642622637 has 2 divisors, whose sum is σ = 44642622638. Its totient is φ = 44642622636.

The previous prime is 44642622601. The next prime is 44642622683. The reversal of 44642622637 is 73622624644.

It is a happy number.

44642622637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (44642622683) can be obtained adding 44642622637 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26483982121 + 18158640516 = 162739^2 + 134754^2 .

It is a cyclic number.

It is not a de Polignac number, because 44642622637 - 2¹⁵ = 44642589869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44642622697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22321311318 + 22321311319.

It is an arithmetic number, because the mean of its divisors is an integer number (22321311319).

Almost surely, 2^44642622637 is an apocalyptic number.

It is an amenable number.

44642622637 is a deficient number, since it is larger than the sum of its proper divisors (1).

44642622637 is an equidigital number, since it uses as much as digits as its factorization.

44642622637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 46.

The spelling of 44642622637 in words is "forty-four billion, six hundred forty-two million, six hundred twenty-two thousand, six hundred thirty-seven".