5144521368 has 144 divisors (see below), whose sum is σ = 15893991720. Its totient is φ = 1383309312.

The previous prime is 5144521363. The next prime is 5144521399. The reversal of 5144521368 is 8631254415.

It is a super-2 number, since 2×5144521368² = 52932200211617182848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5144521363) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 332296 + ... + 347432.

Almost surely, 2^5144521368 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 5144521368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7946995860).

5144521368 is an abundant number, since it is smaller than the sum of its proper divisors (10749470352).

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

5144521368 is a wasteful number, since it uses less digits than its factorization.

5144521368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15194 (or 15166 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 5144521368 is about 71725.3188769489. The cubic root of 5144521368 is about 1726.2949171278.

The spelling of 5144521368 in words is "five billion, one hundred forty-four million, five hundred twenty-one thousand, three hundred sixty-eight".