5381038656 has 168 divisors, whose sum is σ = 18280400320. Its totient is φ = 1537408512.

The previous prime is 5381038639. The next prime is 5381038681. The reversal of 5381038656 is 6568301835.

5381038656 is a `hidden beast` number, since 538 + 103 + 8 + 6 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84150 + ... + 133578.

Almost surely, 2^5381038656 is an apocalyptic number.

5381038656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5381038656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9140200160).

5381038656 is an abundant number, since it is smaller than the sum of its proper divisors (12899361664).

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

5381038656 is an equidigital number, since it uses as much as digits as its factorization.

5381038656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49463 (or 49441 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 5381038656 is about 73355.5632246117. The cubic root of 5381038656 is about 1752.3547789689.

The spelling of 5381038656 in words is "five billion, three hundred eighty-one million, thirty-eight thousand, six hundred fifty-six".