44064457638 has 16 divisors (see below), whose sum is σ = 89573652336. Its totient is φ = 14447363040.

The previous prime is 44064457559. The next prime is 44064457651. The reversal of 44064457638 is 83675446044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60196981 + ... + 60197712.

It is an arithmetic number, because the mean of its divisors is an integer number (5598353271).

Almost surely, 2^44064457638 is an apocalyptic number.

44064457638 is an abundant number, since it is smaller than the sum of its proper divisors (45509194698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44064457638 is a wasteful number, since it uses less digits than its factorization.

44064457638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120394759.

The product of its (nonzero) digits is 7741440, while the sum is 51.

The spelling of 44064457638 in words is "forty-four billion, sixty-four million, four hundred fifty-seven thousand, six hundred thirty-eight".