44378570138 has 32 divisors (see below), whose sum is σ = 78720768000. Its totient is φ = 18358913664.

The previous prime is 44378570129. The next prime is 44378570179. The reversal of 44378570138 is 83107587344.

It is a happy number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1937006 + ... + 1959782.

It is an arithmetic number, because the mean of its divisors is an integer number (2460024000).

Almost surely, 2^44378570138 is an apocalyptic number.

44378570138 is a deficient number, since it is larger than the sum of its proper divisors (34342197862).

44378570138 is a wasteful number, since it uses less digits than its factorization.

44378570138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27614.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 44378570138 in words is "forty-four billion, three hundred seventy-eight million, five hundred seventy thousand, one hundred thirty-eight".