5781617168 has 20 divisors (see below), whose sum is σ = 11220791868. Its totient is φ = 2885928960.

The previous prime is 5781617167. The next prime is 5781617189. The reversal of 5781617168 is 8617161875.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5008109824 + 773507344 = 70768^2 + 27812^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (5781617167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295193 + ... + 314168.

Almost surely, 2^5781617168 is an apocalyptic number.

It is an amenable number.

5781617168 is a deficient number, since it is larger than the sum of its proper divisors (5439174700).

5781617168 is a wasteful number, since it uses less digits than its factorization.

5781617168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609962 (or 609956 counting only the distinct ones).

The product of its digits is 564480, while the sum is 50.

The square root of 5781617168 is about 76036.9460722878. The cubic root of 5781617168 is about 1794.8015824420.

The spelling of 5781617168 in words is "five billion, seven hundred eighty-one million, six hundred seventeen thousand, one hundred sixty-eight".