44666711557 has 16 divisors (see below), whose sum is σ = 52688467440. Its totient is φ = 37467343872.

The previous prime is 44666711543. The next prime is 44666711623. The reversal of 44666711557 is 75511766644.

It can be written as a sum of positive squares in 8 ways, for example, as 46908801 + 44619802756 = 6849^2 + 211234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44666711557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44666711857) by changing a digit.

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, 3478278 + ... + 3491095.

It is an arithmetic number, because the mean of its divisors is an integer number (3293029215).

Almost surely, 2^44666711557 is an apocalyptic number.

It is an amenable number.

44666711557 is a deficient number, since it is larger than the sum of its proper divisors (8021755883).

44666711557 is a wasteful number, since it uses less digits than its factorization.

44666711557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6969432.

The product of its digits is 4233600, while the sum is 52.

The spelling of 44666711557 in words is "forty-four billion, six hundred sixty-six million, seven hundred eleven thousand, five hundred fifty-seven".