5391961344 has 540 divisors, whose sum is σ = 20262760672. Its totient is φ = 1395947520.

The previous prime is 5391961343. The next prime is 5391961357. The reversal of 5391961344 is 4431691935.

5391961344 is a `hidden beast` number, since 539 + 19 + 61 + 3 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 5391961344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5391961343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 17563239 + ... + 17563545.

Almost surely, 2^5391961344 is an apocalyptic number.

5391961344 is a gapful number since it is divisible by the number (54) 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 5391961344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10131380336).

5391961344 is an abundant number, since it is smaller than the sum of its proper divisors (14870799328).

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

5391961344 is a wasteful number, since it uses less digits than its factorization.

5391961344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 330 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 5391961344 is about 73429.9757864593. The cubic root of 5391961344 is about 1753.5396486325.

The spelling of 5391961344 in words is "five billion, three hundred ninety-one million, nine hundred sixty-one thousand, three hundred forty-four".