5531657868 has 144 divisors (see below), whose sum is σ = 15445946880. Its totient is φ = 1655337600.

The previous prime is 5531657839. The next prime is 5531657881. The reversal of 5531657868 is 8687561355.

5531657868 is a `hidden beast` number, since 5 + 5 + 3 + 1 + 6 + 578 + 68 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19969746 + ... + 19970022.

It is an arithmetic number, because the mean of its divisors is an integer number (107263520).

Almost surely, 2^5531657868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5531657868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7722973440).

5531657868 is an abundant number, since it is smaller than the sum of its proper divisors (9914289012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5531657868 is a wasteful number, since it uses less digits than its factorization.

5531657868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 743 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The square root of 5531657868 is about 74375.1159192374. The cubic root of 5531657868 is about 1768.5544570285.

The spelling of 5531657868 in words is "five billion, five hundred thirty-one million, six hundred fifty-seven thousand, eight hundred sixty-eight".