44728242857 has 2 divisors, whose sum is σ = 44728242858. Its totient is φ = 44728242856.

The previous prime is 44728242787. The next prime is 44728242907. The reversal of 44728242857 is 75824282744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36839428096 + 7888814761 = 191936^2 + 88819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44728242857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44728242799 and 44728242808.

It is not a weakly prime, because it can be changed into another prime (44728242157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22364121428 + 22364121429.

It is an arithmetic number, because the mean of its divisors is an integer number (22364121429).

Almost surely, 2^44728242857 is an apocalyptic number.

It is an amenable number.

44728242857 is a deficient number, since it is larger than the sum of its proper divisors (1).

44728242857 is an equidigital number, since it uses as much as digits as its factorization.

44728242857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8028160, while the sum is 53.

The spelling of 44728242857 in words is "forty-four billion, seven hundred twenty-eight million, two hundred forty-two thousand, eight hundred fifty-seven".