5649171872 has 12 divisors (see below), whose sum is σ = 11121807186. Its totient is φ = 2824585920.

The previous prime is 5649171817. The next prime is 5649171907. The reversal of 5649171872 is 2781719465.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5224976656 + 424195216 = 72284^2 + 20596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5649171872.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88268279 + ... + 88268342.

Almost surely, 2^5649171872 is an apocalyptic number.

It is an amenable number.

5649171872 is a deficient number, since it is larger than the sum of its proper divisors (5472635314).

5649171872 is a wasteful number, since it uses less digits than its factorization.

5649171872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176536631 (or 176536623 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The square root of 5649171872 is about 75160.9730644834. The cubic root of 5649171872 is about 1780.9904717739.

The spelling of 5649171872 in words is "five billion, six hundred forty-nine million, one hundred seventy-one thousand, eight hundred seventy-two".