5418778144 has 72 divisors (see below), whose sum is σ = 11798317440. Its totient is φ = 2447647488.

The previous prime is 5418778129. The next prime is 5418778177. The reversal of 5418778144 is 4418778145.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243517 + ... + 264835.

It is an arithmetic number, because the mean of its divisors is an integer number (163865520).

Almost surely, 2^5418778144 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 5418778144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5899158720).

5418778144 is an abundant number, since it is smaller than the sum of its proper divisors (6379539296).

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

5418778144 is a wasteful number, since it uses less digits than its factorization.

5418778144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21402 (or 21381 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 49.

The square root of 5418778144 is about 73612.3504854994. The cubic root of 5418778144 is about 1756.4419059995.

Subtracting from 5418778144 its reverse (4418778145), we obtain a palindrome (999999999).

The spelling of 5418778144 in words is "five billion, four hundred eighteen million, seven hundred seventy-eight thousand, one hundred forty-four".