4471661745 has 24 divisors (see below), whose sum is σ = 7811920896. Its totient is φ = 2366104608.

The previous prime is 4471661713. The next prime is 4471661767. The reversal of 4471661745 is 5471661744.

4471661745 is a `hidden beast` number, since 4 + 471 + 6 + 6 + 174 + 5 = 666.

It is not a de Polignac number, because 4471661745 - 2⁵ = 4471661713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 4471661745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 385507 + ... + 396936.

It is an arithmetic number, because the mean of its divisors is an integer number (325496704).

Almost surely, 2^4471661745 is an apocalyptic number.

4471661745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4471661745 is a deficient number, since it is larger than the sum of its proper divisors (3340259151).

4471661745 is a wasteful number, since it uses less digits than its factorization.

4471661745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782581 (or 782578 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 4471661745 is about 66870.4848569232. The cubic root of 4471661745 is about 1647.4907368978.

Subtracting 4471661745 from its reverse (5471661744), we obtain a palindrome (999999999).

The spelling of 4471661745 in words is "four billion, four hundred seventy-one million, six hundred sixty-one thousand, seven hundred forty-five".