44728243857 has 48 divisors (see below), whose sum is σ = 72244763136. Its totient is φ = 26430432000.

The previous prime is 44728243829. The next prime is 44728243891. The reversal of 44728243857 is 75834282744.

44728243857 is a `hidden beast` number, since 4 + 472 + 82 + 43 + 8 + 57 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-44728243857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44728242857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10514743 + ... + 10518995.

It is an arithmetic number, because the mean of its divisors is an integer number (1505099232).

Almost surely, 2^44728243857 is an apocalyptic number.

It is an amenable number.

44728243857 is a deficient number, since it is larger than the sum of its proper divisors (27516519279).

44728243857 is a wasteful number, since it uses less digits than its factorization.

44728243857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6902 (or 6899 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 54.

The spelling of 44728243857 in words is "forty-four billion, seven hundred twenty-eight million, two hundred forty-three thousand, eight hundred fifty-seven".