5631255738 has 48 divisors (see below), whose sum is σ = 12787834176. Its totient is φ = 1787533440.

The previous prime is 5631255689. The next prime is 5631255743. The reversal of 5631255738 is 8375521365.

5631255738 is a `hidden beast` number, since 5 + 63 + 1 + 2 + 557 + 38 = 666.

It is a super-2 number, since 2×5631255738² = 63422082373515849288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5631255693 and 5631255702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64018 + ... + 123938.

It is an arithmetic number, because the mean of its divisors is an integer number (266413212).

Almost surely, 2^5631255738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5631255738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6393917088).

5631255738 is an abundant number, since it is smaller than the sum of its proper divisors (7156578438).

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

5631255738 is a wasteful number, since it uses less digits than its factorization.

5631255738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60179 (or 60176 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 5631255738 is about 75041.6933311076. The cubic root of 5631255738 is about 1779.1056966606.

The spelling of 5631255738 in words is "five billion, six hundred thirty-one million, two hundred fifty-five thousand, seven hundred thirty-eight".